List of Patents filed/Granted

1. 1220/DEL/2015 India A 20 KV/20 ka linear aperture radial multichannel Pseudospark switch (LARM-PSS) for high current applications
2. 1366/DEL/2014 India On-line process analysis through near infrared spectroscopy and system for free fatty acid value in edible oil
3. 1670/DEL/2015 India Precision signal waveform linearizer in MOS Analog circuit
4. 1887/DEL/2011 India Planar solar concentrators using subwavelength gratings
5. 1887/DEL/2015 India A device useful for mask alignment
6. 2017/DEL/2014 India A novel sheet-beam plasma cathode electron (SPCE) gun and its beam diagnostic using innovative dielectric charging technique
7. 2293/DEL/2011 India Real time pellet size distribution measurement using firewire camera
8. 2529/DEL/2013 India High-speed multi bit logic decoder for current mode switching
9. 2592/DEL/2013 India Design and fabrication of lab on chip for blood plasma and cell separation and blood cell counting
10. 3060/DEL/2014 India A non-destructive method for testing the viability of individual cotton seeds using NIR spectroscopy
11. 3989/DEL/2015 India Fabrication of grids using EDM process
12. 623/DEL/2015 India Characterization and compensation circuitry for piezoresistive pressure sensor to accommodate temperature induced variations
13. 797/DEL/2015 India A novel dielectric barrier discharge (DBD) based portable VUV/UV source for water disinfection
14. 90/DEL/2014 India Active sintered tungsten wire dispenser cathode
15. IN104209 India Improvements in or relating to condenser microphones
16. IN109604 India Improvements in or relating to gain control circuits for television receivers
17. IN109904 India Improvements in or relating to foster-Seely type discriminator circuit
18. IN109905 India Improvements in or relating to the wide-band double-tuned coupled if amplifier for tv receivers
19. IN109906 India Improvements in or relating to video amplifiers
20. IN112185 India Improvements in or relating to flywheel synchronizations circuits for tv receivers
21. IN112217 India An injected beam crossed-field tube
22. IN121151 India Improvement in or relating to electrolytic deposition of gold on cobalt
23. IN123311 India Improvements in or relating to fabrication of bipolar monolithic integrated circuits
24. IN125605 India A method of making anode block for magnetrons and apparatus thereof
25. IN125852 India An injected beam type crossed -field tube with improved Kino long gum
26. IN126064 India Improvements in or relating to wire helix winding for electronic device such as travelling wave tube (TWT)
27. IN127269 India Improvements in or relating to the manufacture of twisted waveguides and jigs therefor
28. IN127322 India An improved log periodic dipole antenna for beam compression and gain improvement
29. IN131174 India Improvements in and relating to glass to metal seals for encapsulation of semiconductor devices
30. IN131255 India A water carrier for furnace loading, unloading and carrying semiconductor wafers
31. IN135145 India Improvements in or relating to printing dots or such other patterns on the semiconductors materials such as silicon, germanium or microscopic glass slides or ceramic
32. IN135146 India Improvements in or relating to the manufacture of a multiple-probe-head for measuring resistivity
33. IN135304 India An improved die for making glass headers
34. IN136265 India Substrate heater cum holder for thin film deposition
35. IN136492 India A horizontal deflection coil winding machine for winding deflection coils for television receiver
36. IN136493 India A vertical deflection coil winding machine
37. IN137075 India A toroidal winding machine
38. IN137629 India A soldering bit for desoldering dual inline integrated circuit packages and sockets
39. IN138234 India A machine for drilling hole in printed circuit boards
40. IN138601 India A device for locking deflection coil to tv picture tube
41. IN138931 India Improvements relating to high frequency step attenuator
42. IN140375 India Improvement in or relating to boundary layer flowmeter
43. IN140378 India An apparatus and improvement in or relating to chemically thinning and polishing semiconductor wafers
44. IN141286 India A novel apparatus for oxidation of silicon wafers for fabrication of semiconductor devices
45. IN141287 India An apparatus for diffusion of impurities in semiconductor using liquid dopants
46. IN141607 India An improved design of multi-channel multi-band tv antenna
47. IN141755 India A hand operated machine for winding horizontal deflection coil for tv
48. IN141912 India An improved feeder for flash evaporation of nickel -chromium powder for the fabrication of thin film hybrid integrated circuits
49. IN141913 India A magnetically operated long -term view -port for observing vacuum processes
50. IN141914 India Improvements in or relating to fabrication of resistor array circuit on epoxy glass substrate
51. IN141956 India A device for continuously feeding aluminium wire contained in a spool to a heated tungsten strip
52. IN142130 India Improvements in or relating to electret condenser microphone
53. IN142247 India A method of manufacturing an etchant for selective etching of silicon monoxide film deposited on glass plate for fabricating thin film capacitors
54. IN142272 India A process and an apparatus for imparting hard and stable characterised to semiconductor devices
55. IN142592 India A novel device for evaporating silicon monoxide thin films on glass/alumina substrates used for the fabrication of hybrid integrated circuits
56. IN142698 India A device for picking up vibration such as voice signals directly from the throat
57. IN142968 India An improved process for vacuum deposition of aluminium on substrates
58. IN143016 India Improvements in or relating to the manufacture of grids central for transmitting tubes having thoriated tungsten cathodes
59. IN143062 India A device for picking up undulations on a moving disc record groove
60. IN143265 India Logic control system for 12 step three phase thyristor inverter
61. IN143304 India A device for making sintered glass headers for electron tubes
62. IN143356 India A novel electrolytic cell for anodic oxidation of conductors /semiconductors
63. IN143683 India An improved mobile amplitude modulated trans receiving apparatus
64. IN143684 India A silicon halide evaporator for obtaining constant resistivity of silicon epitaxial layer on silicon
65. IN143685 India A process for the manufacture of semiconductor device such as mesa device
66. IN143706 India An improved process for the fabrication of thin film capacitor
67. IN143908 India A hand winding machine for winding coils on multiple legs of a former
68. IN146328 India Improvements in or relating to device for depositing homogeneous and pinhole free films of dielectric materials on substrate
69. IN147322 India Improvement in or relating to a process of manufacturing of thin film resistors, resistor networks and/or hybrid circuits
70. IN153546 India An improved device for the conversion of a signal from a non-linear transducer to linear digital form suitable for display
71. IN153551 India An improved antenna device for omnidirectional radio communications
72. IN153766 India An electronic device for measuring the internal pressure in sealed containers
73. IN153803 India Improved process for the production of nickel-chromium and aluminium film resistors on glass/alumina substrates
74. IN153861 India An audio – visual film strip projector device for frame by frame projection of a film strip
75. IN154387 India An improved hall probe device for use in the measurement of magnetic fields
76. IN155299 India Device for measuring the true ac resistivity of a liquid
77. IN156535 India A logic control device for generating pulse-width-modulated pattern adapted for a smooth switch over to a six-step mode of operation of invention systems
78. IN158816 India A digital set point proportional control device for use with precision unit operations in the chemical industry
79. IN159026 India An electronic process control device for use as digital dual set point controllers
80. IN159316 India An apparatus for precision low temperature vapour deposition of thin film coatings on wafer substrates
81. IN159410 India An improved process for the manufacture of silicon varactor diode from epitaxial wafer
82. IN160668 India A device for on-line estimation and display of brix, purity and supersaturation of sugar massecuite boiling in closed vessel under vacuum
83. IN163102 India Improvements in or relating to frequency agile magnetron
84. IN163395 India Swing blade crosswind axis turbine
85. IN165431 India A process for the manufacture of submicron gate gas mesfets using contact photolithography
86. IN168044 India An improved electronic chip
87. IN170901 India A consistency/viscosity monitor useful for measuring the consistency /viscosity of a liquid
88. IN171013 India A process for the formation of stencil for solder cream printing on thick film hybrid circuits
89. IN171017 India A digital indicator for comparing digital multiset points with a single set of digital comparators
90. IN173902 India A device for monitoring neutral to ground voltage for the protection of electronic equipment
91. IN174002 India A process for the manufacture of sputtering targets of ceramic compounds useful for the preparation of high temperature superconducting thin films
92. IN174341 India An electron emitting device for high resolution electron optical instruments
93. IN175172 India An apparatus for producing extremely fine tips of electrolytically etchable
94. IN175514 India High current measuring device for direct and alternating current power circuits with complete isolation
95. IN177070 India An improved process for the manufacture of texturized substrate using a plasma etching system
96. IN177724 India A device for on-line sensing monitoring and display of level of industrial conducting liquids and slurries
97. IN177915 India An improved process for the production of steam by burning bagasse
98. IN179081 India An analogue current control signal transmission system for ontrolling stepper motors
99. IN179092 India A two-wire digital current control signal transmission system for precisely controlling remotely located stepper motor
100. IN179713 India A device for time sharing of single ac motor soft starter having microprocessor based logic control unit (mplcu)
101. IN179792 India An electronic device for high speed peer to peer data communication
102. IN182301 India An improved process for the production of high frequency semiconductor devices
103. IN182726 India An improved process for the preparation of packages of micro and millimetre wave semiconductor devices
104. IN183053 India An improved process for the production of thin semiconductor devices
105. IN183833 India An improved process for the preparation of thin superconducting ceramic oxides flim
106. IN184773 India A ceramic composition useful in the fabrication of zirconia cells
107. IN184778 India An analog current control signal transmission system for controlling stepper motor operated control valve plug position
108. IN184865 India A device useful for scaring birds
109. IN185817 India A process for the preparation of an improved silicon wafer containing titanium disilicide film for the fabrication of integrated circuits or related devices
110. IN185977 India An improved process for the preparation of sintered porous refractory metal cathode matrix
111. IN186056 India A process for the production of millimeter wave transit time effect semiconductor devices
112. IN186381 India An interfacing device useful for interfacing a time segmented speech interposition scrambler and a communication channel
113. IN186983 India An improved process for selective electroplating of noble metals in fabrication of heatsink for high frequency injection controlled transit time effect semiconductor devices
114. IN187422 India An improved process for the preparation of silicon wafer contanning tungsten sisilicide film useful for making integrated circuits and related devices
115. IN188322 India A ceramic composition useful for cataphoretic coating of filaments/heaters used in vacuum tubes
116. IN189160 India A device for controlling automatic sulphur burner
117. IN194357 India An improved process for fabrication of silicon varactor diodes useful for electronic tuning applications
118. IN196743 India An electronic device useful for measuring three dimensional model and ground coordinates from sterio photogrammatic instruments
119. IN197091 India An improved process for fabrication of metal grids used in electron tubes
120. IN199610 India A process for preparation of thick -film composite system useful for joining metal on insulating substrate
121. IN199865 India A process for the manufacture of electronic devices such as hybrid microcircuits printed circuit boards and passive components
122. IN199919 India A device useful for sensing ammonia and nytrogen oxide(s) gases at room temperature
123. IN201611002825 India Improved Performance of Op Amplifier by Its Bias Reference Circuit
124. IN201611003224 India Non Destructive Vibration Analysis of Civil Structures Using High Speed Imaging in Real Time
125. IN201611005291 India A unique fault tolerant driver for parallel driven led strings
126. IN201611005494 India Synthesis of Re Sc Doped Impregnant Mixed Tungsten Nano-Powder for Applications of Cathode in Thz Region
127. IN201611007476 India A multi-beam klystron cavity
128. IN201611042441 India Non-invasive device to access diabetic condition
129. IN201711010409 India A novel approach for focusing of electron beam in multi-beam klystron
130. IN201911012438 India Highly sensitive multipurpose pyramid type sensing unit for dual axis solar tracking systems
131. IN213221 India A process for the fabrication of improved metallised ceramic substrate useful for assembly of semiconductor devices
132. IN215172 India A process for the preparation of an improved thick film resistor useful for making strain gauge with enhanced gauge factor upto 1000
133. IN215343 India A process for the preparation of thick film resistor useful for making strain gauge
134. IN215777 India An improved process of fabricating metallized substrates useful for making electronic devices and circuits
135. IN215864 India An improved process for the fabrication of smooth verticial side walled deep trenches {110} orientation silicon wafers useful for making semiconductor devices
136. IN218369 India A process for the manufacture of improved micro thin film useful as low relative humidity sensor
137. IN224578 India A novel metallic paste composition useful as an interlayer in diffusion soldering
138. IN228263 India A process for the fabrication of improved conductor for power thick film hybrid microcircuits /microwave integrated circuits(phmc)
139. IN231612 India A novel process for manufacturing silicon nanostructures in single crystalline silicon and silicon nanostructures made thereby useful for making electronic devices
140. IN233097 India A process for diffusion soldering
141. IN260489 India A process for the manufacture of ion-sensitive field-effect transistor (isfet) with a high aspect ratio
142. IN297571 India A system useful for localization of disaster and identification of trapped miners in underground mines
143. IN335009 India Design and fabrication of lab on chip for blood plasma and cell separation and blood cell counting
144. IN86639 India An inexpansive chemical method of dicing a semiconductor slice for the manufacture of transistor family devices
145. IN97444 India An improved vacuum whirler for supplying a thin and uniform coating of an emulsion on a wafer
146. US5866075 USA Device useful for sensing ammonia and nitrogen oxides(s) gases at room temperature
147. US6309695 USA Process for the preparation of a thick film resistor useful for making strain gauge
148. US9221293 USA Method to design a security feature on the substrate of security documents using sub wavelength grating
149. 0062NF2012/US USA Security threads for banknotes using high-contrast subwavelength gratings
150. 0107NF 2011/US USA Planar solar concentrators using subwavelength gratings
151. 0174NF2007/IN India A novel process for brazing of copper impregnated graphite with other materials
152. 0065NF 2007IN India A simple and effective method of localization and identification of trapped miners in coalmines
153. 0050NF2014/IN India A Novel Sheet-beam Plasma Cathode Electron (SPCE) Gun and its Beam Diagnostic using Innovative Dielectric Charging Technique
154. 0072NF2013 India Design and Fabrication of Lab ON Chip For Blood Plasma And Cell Separation And Blood Cell Counting
155. 0037NF 2015/IN India Precision signal waveform linearizer in MOS analog circuit
156. 0041NF2015/IN India Improved performance of op amplifier by its bias reference circuit
157. 0227NF2015/IN India Non-destructive vibration analysis of civil structures using high speed imaging in real time
158. 0236NF2013/IN India A unique fault tolerant driver for parallel driven led strings
159. 0139NF2015/IN India Synthesis of Re & Sc doped impregnant mixed tungsten nano-powder for application of cathode in THZ region.
160. 0122NF2015/IN India A multi-beam klystron cavity
161. 0094NF2016/IN India A novel approach for focusing of electron beam in a multi-beam klystron
162. 0064NF2016/IN India A technique of microtunnel fabrication for MEMS Acoustic Sensor
163. 0282NF 2016/IN India Non invasive device to access diabetic condition
164. 0049NF2018/IN India Metal nitride positive electrode material for rechargeable Li-O2 batteries