Patents by Inventor Nalin Kumar
Nalin Kumar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6573643Abstract: A field emission cathode for use in flat panel displays is described including a layer of conductive material and a layer of amorphic diamond film, functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The emission sites each contain at least two sub-regions having differing electron affinities. Use of the cathode to form a computer screen is also described along with the use of the cathode to form a fluorescent light source.Type: GrantFiled: October 2, 2000Date of Patent: June 3, 2003Assignee: SI Diamond Technology, Inc.Inventors: Nalin Kumar, Chenggang Xie
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Patent number: 6552563Abstract: A device for testing flat panel displays includes an interface having compliant bumps mounted thereon, which make electrical contact with pads on the display panel. The interface may have a hole formed therein for allowing the passage of light therethrough when the interface is mounted on the display panel. The compliant bumps ensure that all of the bumps make sufficient electrical contact with the pads.Type: GrantFiled: November 14, 1996Date of Patent: April 22, 2003Assignee: SI Diamond Technology, Inc.Inventors: Zvi Yaniv, Nalin Kumar, Nathan Potter
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Patent number: 6511712Abstract: Provided is a method using a dry deposition apparatus for depositing grains on a substrate comprising: an electrostatic chuck having one or more collection zones, wherein the substrate is layered on the chuck for processing; a charged grain delivery apparatus for directing charged grains for electrostatic deposition on the substrate at the locations of the collection zones; and an optical detection device for quantifying the amount of grains deposited.Type: GrantFiled: March 21, 2000Date of Patent: January 28, 2003Assignee: Delsys PharmaceuticalInventors: Eugene Samuel Poliniak, Hoi Cheong Steve Sun, Nitin Vithalbhai Desai, Nalin Kumar, William Ronald Roach, Lawrence Harrison Hammer, Peter David Southgate, Bawa Singh, Howard Christopher Rivenburg, Peter Zanzucchi, David Keller, Dominic Stephen Rosati
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Patent number: 6504311Abstract: A pulsed lamp is supplied wherein electrons are supplied from a substantially flat cold cathode having low effective field emission work function and are accelerated to excite light emission from a phosphor layer on a transparent anode plate. The emission site density of the cathode and emission current characteristics vs electric field are selected to provide high light output while requiring only small duty cycle pulses from a voltage generator.Type: GrantFiled: March 25, 1996Date of Patent: January 7, 2003Assignee: SI Diamond Technology, Inc.Inventors: Nalin Kumar, Christo P. Bojkov, Martin A. Kykta
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Patent number: 6417686Abstract: A device for testing flat panel displays includes an interface having compliant bumps mounted thereon, which make electrical contact with pads on the display panel. The interface may have a hole formed therein for allowing the passage of light therethrough when the interface is mounted on the display panel. The compliant bumps ensure that all of the bumps make sufficient electrical contact with the pads.Type: GrantFiled: January 26, 2000Date of Patent: July 9, 2002Assignee: SI Diamond Technology, Inc.Inventors: Zvi Yaniv, Nalin Kumar, Nathan Potter
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Publication number: 20020051613Abstract: An improved coating for optical fibers and a method for applying the improved coating are described. The present invention is a dimensionally precise and uniform coating with low-porosity. The improved coating is applied via sputtering within a vacuum chamber. Environmental conditions are monitored within a cylindrical magnetron during sputtering. Sputtering is adjusted or temporarily ceased when environmental conditions approach a damage threshold. Sputtered particles within a plasma cloud are dimensionally similar and adhere to an optical fiber in a volume efficient arrangement forming a more precise, denser, and more adherent coating. Embodiments of the present invention provide improved pull strength by compressively constraining the optical fiber within the coating and by closing microcracks.Type: ApplicationFiled: October 9, 2001Publication date: May 2, 2002Inventors: Bawa Singh, Nalin Kumar, Vipulkumar Patel, Krishna Linga, Ali Ouali
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Publication number: 20010033863Abstract: A substrate is robotically picked up at a station and transported to a measuring station to measure the distance to a reference. The substrate is aligned to a robot before measurement. The measured substrate is then transported to a pharmaceutical or diagnostic powder/grain deposition station where the powder/grains are controllably deposited on the substrate to predetermined thicknesses over a plurality of powder/grain collection zones. The deposited powder/grains are then measured to determine the thickness and area covered by the deposited powder/grains at each collection zone. The substrate is then transported to a lamination station and each collection zone of powder/grains is welded to a cover substrate. The system remembers which collection zones are out of specification so that they can be later selectively discarded.Type: ApplicationFiled: January 31, 2001Publication date: October 25, 2001Applicant: Delsys Pharmaceutical CorporationInventors: Suggy S. Chrai, Ramaswamy Murari, Eugene Samuel Poliniak, Hoi Cheong Steve Sun, Nitin Vithalbhai Desai, Dominic Stephen Rosati, Nalin Kumar, William Ronald Roach, Lawrence Harrison Hammer, Peter David Southgate, Bawa Singh, Howard Christopher Rivenburg, David Keller, Peter John Zanzucchi, Aaron William Levine, Prince Lal
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Patent number: 6303143Abstract: A substrate is roboticaly picked up at a station and transported to a measuring station to measure the distance to a reference. The substrate is aligned to a robot before measurement. The measured substrate is then transported to a pharmaceutical or diagnostic powder/grain deposition station where the powder/grains are controllably deposited on the substrate to predetermined thicknesses over a plurality of powder/grain collection zones. The deposited powder/grains are then measured to determine the thickness and area covered by the deposited powder/grains at each collection zone. The substrate is then transported to a lamination station and each collection zone of powder/grains is welded to a cover substrate. The system remembers which collection zones are out of specification so that they can be later selectively discarded.Type: GrantFiled: June 10, 1998Date of Patent: October 16, 2001Assignees: Sarnoff Corporation, Delsys Pharmaceutical CorporationInventors: Suggy S. Chrai, Ramaswamy Murari, Eugene Samuel Poliniak, Hoi Cheong (Steve) Sun, Nitin Vithalbhai Desai, Dominic Stephen Rosati, Nalin Kumar, William Ronald Roach, Lawrence Harrison Hammer, Peter David Southgate, Bawa Singh, Howard Christopher Rivenburg, David Keller, Peter John Zanzucchi, Aaron William Levine, Prince Lal
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Patent number: 6127773Abstract: A field emission cathode for use in flat panel displays is disclosed comprising a layer of conductive material and a layer of amorphic diamond film, functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The emission sites each contain at least two sub-regions having differing electron affinities. Use of the cathode to form a computer screen is also disclosed along with the use of the cathode to form a fluorescent light source.Type: GrantFiled: June 4, 1997Date of Patent: October 3, 2000Assignee: SI Diamond Technology, Inc.Inventors: Nalin Kumar, Chenggang Xie
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Patent number: 6111354Abstract: A field emission lamp, of either a diode or triode structure has a packaging whereby electrical access to the various electrodes of the lamp is provided through the rear or underside of the field emission device so that the individual lamps can be placed in close proximity to each other.Type: GrantFiled: July 22, 1999Date of Patent: August 29, 2000Assignee: SI Diamond Technology, Inc.Inventors: Richard Lee Fink, Nalin Kumar, Donald Miller Wilson
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Patent number: 6084338Abstract: A cathode assembly includes a substrate (1101), a plurality of electrically conductive strips (1102), nano-size diamond particles (1701), and a layer (1801) of diamond material deposited (CVD) over the diamond particles (1701).Type: GrantFiled: May 14, 1999Date of Patent: July 4, 2000Assignee: SI Diamond Technology, Inc.Inventors: Christo P. Bojkov, Richard Lee Fink, Nalin Kumar, Alexei Tikhonski, Zvi Yaniv
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Patent number: 6063194Abstract: Provided is, among other things, a dry deposition apparatus for depositing grains on a substrate comprising:an electrostatic chuck having one or more collection zones, wherein the substrate is layered on the chuck for processing;a charged grain delivery apparatus for directing charged grains for electrostatic deposition on the substrate at the locations of the collection zones; andan optical detection device for quantifying the amount of grains deposited.Type: GrantFiled: June 10, 1998Date of Patent: May 16, 2000Assignee: Delsys Pharmaceutical CorporationInventors: Eugene Samuel Poliniak, Hoi Cheong Steve Sun, Nitin Vithalbhai Desai, Nalin Kumar, William Ronald Roach, Lawrence Harrison Hammer, Peter David Southgate, Bawa Singh, Howard Christopher Rivenburg, Peter Zanzucchi, David Keller, Dominic Stephen Rosati, Aaron W. Levine, Bogdan Brycki
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Patent number: 6031245Abstract: A semiconductor device is presented which exhibits both interband and intraband tunnelling. The device comprises two active layers (21, 23) which are sandwiched between two barrier layers (3, 5). These layers are located between first and second terminals (7, 9). The active layers (21, 23) are chosen such that the conduction band edge (27) of the first active layer (21) having a lower energy than the valence band edge (25) of the second active layer (23);the first active layer (21) having a first confined conduction band energy level (29) with an energy higher than that of the conduction band edge (27) of the first active layer (21);the second active layer (23) having a first confined valence band energy level (33) with an energy lower than that of the valence band edge (25) of the second active layer (23);wherein the first confined valence band energy level (33) and the first confined conduction band energy level (29) are located such that the device can exhibit both intraband and interband tunnelling.Type: GrantFiled: December 11, 1998Date of Patent: February 29, 2000Assignee: Kabushiki Kaisha ToshibaInventors: Nalin Kumar Patel, Mark Levence Leadbeater, Llewellyn John Cooper
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Patent number: 6008595Abstract: A field emission lamp, of either a diode or triode structure has a packaging whereby electrical access to the various electrodes of the lamp is provided through the rear or underside of the field emission device so that the individual lamps can be placed in close proximity to each other.Type: GrantFiled: April 21, 1997Date of Patent: December 28, 1999Assignee: SI Diamond Technology, Inc.Inventors: Richard Lee Fink, Nalin Kumar, Donald Miller Wilson
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Patent number: 5973452Abstract: The present invention provides for a field emission device including an anode assembly and a cathode assembly, wherein the cathode assembly further includes a substrate, a plurality of electrically conducting strips deposited on the substrate, and a continuous layer of diamond material deposited over the plurality of electrically conducting strips and portions of the substrate exposed between the plurality of electrically conducting strips. The field emission device may further include a grid assembly including a perforated silicon substrate, a first dielectric layer deposited on the silicon substrate, and a first conducting layer deposited on the first dielectric layer, wherein the first dielectric layer and the first conducting layer have perforations coinciding with perforations of the silicon substrate.Type: GrantFiled: August 26, 1997Date of Patent: October 26, 1999Assignee: SI Diamond Technology, Inc.Inventors: Christo P. Bojkov, Richard Lee Fink, Nalin Kumar, Alexei Tikhonski, Zvi Yaniv
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Patent number: 5947783Abstract: A cathode assembly includes a substrate, a plurality of electrically conducting strips deposited on the substrate, and a continuous layer of diamond material deposited over the plurality of electrically conducting strips and portions of the substrate exposed between the plurality of electrically conducting strips.Type: GrantFiled: August 26, 1997Date of Patent: September 7, 1999Assignee: SI Diamond Technology, Inc.Inventors: Christo P. Bojkov, Richard Lee Fink, Nalin Kumar, Alexei Tikhonski, Zvi Yaniv
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Patent number: 5926239Abstract: A backlight for a color liquid crystal display uses various techniques for activating colored phosphors, which emit colored light to each one of several sub-pixels within a particular liquid crystal display pixel. Activation of the colored phosphors may be performed using field emission devices, both diode and triode, a fluorescent lamp, thin film electroluminescent light, an ultraviolet lamp, a thermionic emitter, or a high-intensity glow discharge lamp. LCD panels are manufactured using less than four glass substrates.Type: GrantFiled: November 22, 1996Date of Patent: July 20, 1999Assignee: SI Diamond Technology, Inc.Inventors: Nalin Kumar, Zvi Yaniv
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Patent number: 5906721Abstract: Phosphor screens are disclosed that exhibit decreased Coulombic aging and/or lower threshold voltages. The phosphor compositions and electrochemical methods for making those screens are also disclosed.Type: GrantFiled: October 27, 1997Date of Patent: May 25, 1999Assignee: SI Diamond Technology, Inc.Inventors: Christo Pavel Bojkov, Leif Goran Fredin, Nalin Kumar, Howard Khan Schmidt
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Patent number: 5861707Abstract: A field emitter including an exposed wide band gap emission area in contact with and protruding from a planar surface of a conductive metal, and a method of making is disclosed. Suitable wide band gap materials (2.5-7.0 electron-volts) include diamond, aluminum-nitride and gallium-nitride; suitable conductive metals include titanium, tungsten, gold and graphite. The method includes disposing the wide band gap material on a substrate, disposing the conductive metal on the wide band gap material, and etching the conductive metal to expose wide band gap emission areas. The emission areas are well suited for large area flat panel displays.Type: GrantFiled: June 7, 1995Date of Patent: January 19, 1999Assignee: SI Diamond Technology, Inc.Inventor: Nalin Kumar
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Patent number: 5853554Abstract: Phosphor screens are disclosed that exhibit decreased Coulombic aging and/or lower threshold voltages. The phosphor compositions and electrochemical methods for making those screens are also disclosed.Type: GrantFiled: March 27, 1996Date of Patent: December 29, 1998Assignee: SI Diamond Technology, Inc.Inventors: Christo Pavel Bojkov, Leif Goran Fredin, Nalin Kumar, Howard Khan Schmidt