Patents by Inventor Nagaraj Dixit
Nagaraj Dixit 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).
-
Publication number: 20090047222Abstract: A composition for minimizing color fading of an oral care composition is provided. The composition comprises: a) an organic dye-encapsulated silica shell nanoparticle matrix, b) a physiologically stable fluoride ion providing compound in an amount of about 0.1% to about 1% by weight, c) a peroxide species providing compound in an amount of about 1% to to about 20% by weight. The encapsulated silica shell dye nanoparticle stabilizes the color against degradation in the presence of peroxide and fluoride ions.Type: ApplicationFiled: August 15, 2007Publication date: February 19, 2009Inventors: Ben Gu, Nagaraj Dixit, Diane Cummins, James Gerard Masters
-
Publication number: 20080231373Abstract: One embodiment of the invention provides an output circuit for a transistor. The output circuit includes a first capacitor coupled between ground and a drain electrode of the transistor via a first bond wire and a second bond wire coupling which couples a node between said first bond wire coupling and said first capacitor with ground via a second capacitor.Type: ApplicationFiled: March 20, 2007Publication date: September 25, 2008Inventors: Hafizur Rahman, Prasanth Perugupalli, Nagaraj Dixit
-
Publication number: 20070024374Abstract: A power transistor, having: a semiconductor having an electrode formed thereon, wherein the electrode comprises a plurality of interdigitated transistors each having input and output terminals; a first output blocking capacitor having a first terminal electrically coupled to the output terminals of the interdigitated transistors of the semiconductor and a second terminal electrically coupled to ground; and a second output blocking capacitor having a first terminal electrically coupled to the first terminal of the first output blocking capacitor and a second terminal electrically coupled to ground.Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Inventors: Cindy Blair, Tan Pham, Nagaraj Dixit, Thomas Moller
-
Publication number: 20070024358Abstract: A semiconductor power device comprises a flange, a die having a gate, a source, and a drain. The source is electrically coupled to the flange. A drain matching circuit is located on the flange having an input, an output and a bias input, the input being coupled with the drain. The drain matching circuit comprises an inductor coupled in series with a first capacitor between the drain and flange and a second capacitor arranged next to the first capacitor, wherein the second capacitor is coupled with the bias input and in parallel with the first capacitor through a second inductor. An input terminal is mechanically coupled to the flange and electrically coupled with the gate, an output terminal is mechanically coupled to the flange and electrically coupled with the output of the drain matching circuit, and an input bias terminal is mechanically coupled to the flange and electrically coupled with the drain through the bias input.Type: ApplicationFiled: July 26, 2005Publication date: February 1, 2007Inventors: Prasanth Perugupalli, Stan Lopuch, Nagaraj Dixit
-
Publication number: 20060147394Abstract: In various embodiments, the present invention provides a tooth whitening composition comprising a peroxide composite and an orally acceptable carrier. The peroxide composite comprises a peroxide compound and a porous cross-linked polymer, preferably in the form of a microporous particulate. The peroxide compound can be sorbed onto the porous crosslinked polymer. The porous cross-linked polymer may comprise a polymerized polyunsaturated monomer selected from polyacrylates, polymethacrylates, polyitaconates, and mixtures thereof. The carrier can be non-aqueous, and can comprise a film forming material. Methods are also provided for whitening a tooth surface with the tooth whitening compositions.Type: ApplicationFiled: November 23, 2005Publication date: July 6, 2006Inventors: Ramachandra Shastry, Yelloji Mirajkar, Nagaraj Dixit, Ryan Cameron, Qin Wang, Lynette Zaidel, Suman Chopra, Michael Prencipe
-
Publication number: 20050210615Abstract: A method for improving effectiveness of an oral care agent comprises preconditioning an oral surface by wiping the surface with an absorbent fabric having impregnated therein or coated thereon an orally acceptable preconditioning agent such as an activating agent for the oral care agent, wherein the wiping transfers an activating effective amount of the preconditioning agent from the fabric to the oral surface, and thereafter applying a composition comprising the oral care agent to the oral surface.Type: ApplicationFiled: March 29, 2004Publication date: September 29, 2005Inventors: Ramachandra Shastry, Yelloji Mirajkar, Nebojsa Milanovich, Nagaraj Dixit, Michael Prencipe
-
Publication number: 20050207997Abstract: An oral care composition comprises two components. A first such component comprises a first orally acceptable vehicle, a whitening agent and a fluoride salt providing fluoride ion in a total amount of at least about 1,200 ppm of the gel component. A second such component includes a second orally acceptable vehicle and a component that is incompatible with the whitening agent. The second component can comprise a clay-based thickening agent.Type: ApplicationFiled: March 18, 2005Publication date: September 22, 2005Inventors: Nagaraj Dixit, Diego Hoic
-
Patent number: 6806106Abstract: A method for manufacturing a power transistor circuit includes securing a die to a substrate, the die comprising a transistor having an input terminal and an output terminal. One or more performance characteristics of the transistor are measured. Using one or more wire sets, the transistor input terminal is electrically connected to one or more input matching elements and an input signal lead. The impedance of the one or more wire sets, as determined by selecting a desired number and/or length of the wires in each set, is selected based at least in part on the measured transistor performance characteristic(s). Similarly, using one or more additional wire sets, the transistor output terminal is electrically connected to one or more output matching elements and an output signal lead, wherein the impedance of the additional wire sets is selected based at least in part on the measured transistor performance characteristic(s).Type: GrantFiled: March 20, 2001Date of Patent: October 19, 2004Assignee: Infineon Technologies AGInventors: Larry Leighton, Prasanth Perugupalli, Nagaraj Dixit, Tom Moller
-
Patent number: 6669930Abstract: A storage stable liquid peroxide whitening gel composition opacified with an organic and inorganic particles.Type: GrantFiled: January 15, 2003Date of Patent: December 30, 2003Assignee: Colgate Palmolive CompanyInventors: Diego A. Hoic, Jobiah Sabelko, Prakasarao Mandadi, Suryakant Patel, Nagaraj Dixit, Michael Prencipe
-
Publication number: 20030030504Abstract: A tunable impedance matching circuit is provided for tuning an active device, such as, e.g., a field effect transistor, in a RF power amplifier circuit. The matching circuit includes an adjustable length transmission line for electrically coupling a RF signal between an active device and its source and a load. The transmission line, which has a length approximately equal to a quarter of a wavelength of the fundamental frequency of a RF signal being amplified, is adjusted to achieve selected performance characteristic(s) of the amplifier, such as, e.g., input return loss.Type: ApplicationFiled: August 10, 2001Publication date: February 13, 2003Applicant: Telefonaktiebolaget LM EricssonInventors: Nagaraj Dixit, Prasanth Perugupall, Larry Leighton
-
Patent number: 6455482Abstract: A light duty liquid detergent with desirable cleansing properties and mildness to the human skin comprising: at least one surfactant, a solubilizing system and a crosslinked polymer and water.Type: GrantFiled: November 8, 2001Date of Patent: September 24, 2002Assignee: Colgate-Palmolive CompanyInventors: Robert D'Ambrogio, Mahmoud Hassan, Nagaraj Dixit
-
Patent number: 6447756Abstract: A two component dental composition is disclosed which eliminates or substantially reduces the discomfort and pain associated with dentinal hypersensitivity which composition comprises a first dentifrice component having an alkaline pH and contains a potassium ion releasable compound and an alkali metal silicate, a second dentifrice component having an acid pH, the first and second components being maintained separate from each other until dispensed and combined for application to teeth requiring relief from dentine hypersensitivity, whereby heightened desensitization is experienced by the user.Type: GrantFiled: November 8, 2000Date of Patent: September 10, 2002Assignee: Colgate Palmolive CompanyInventors: Nagaraj Dixit, Kowsilla P. Pillay, Robert J. Gambogi
-
Patent number: 5939051Abstract: Oral compositions, such as oral gels and toothpastes, containing a novel high cleaning, low abrasion silica hydrogel abrasive.Type: GrantFiled: February 27, 1998Date of Patent: August 17, 1999Assignee: Colgate-Palmolive CompanyInventors: John Santalucia, Peter Ren, Nagaraj Dixit, Gary Durga, Michael Prencipe, Mahmoud Hassan, Marcus Bentley, Barry Self
-
Patent number: 5851514Abstract: An aqueous abrasive whitening composition containing a peroxide whitening compound which is chemically and physically stable and exhibits heightened and rapid whitening of teeth and stain removal which comprises a combination of water, abrasive and peroxide compounds, a humectant containing a polyethylene glycol, a polyoxyethylene-polyoxypropylene block copolymer, a metal ion complexing agent and an antioxidant, the pH of the composition being in the range of about 5.8 to about 7.2.Type: GrantFiled: August 2, 1996Date of Patent: December 22, 1998Assignee: Colgate Palmolive CompanyInventors: Mahmoud Hassan, Nagaraj Dixit, Michael Prencipe, David B. VIscio, Salim A. Nathoo
-
Patent number: 5792818Abstract: A catalytic process for the hydrolysis of alkyl vinyl ether/maleic anhydride copolymers, involving a base catalyst.Type: GrantFiled: February 5, 1997Date of Patent: August 11, 1998Assignee: Colgate-Palmolive CompanyInventors: Mahmoud Hassan, Robert Mitchell, Nagaraj Dixit, Gary Durga, Marcus Bentley
-
Patent number: 5661221Abstract: A process for preparing a cross-linked alkyl vinyl ether/maleic anhydride copolymer having improved linear viscoelastic properties desired in oral care preparations, wherein the cross-linking of an alkyl vinyl ether/maleic anhydride copolymer with a polyol compound is carried out at a temperature of from about 50.degree. to about 90.degree. C. and the cross-linked product is recovered.Type: GrantFiled: December 18, 1996Date of Patent: August 26, 1997Assignee: Colgate-Palmolive CompanyInventors: Mahmoud Hassan, Nagaraj Dixit, Marcus Bentley, David Benedict Viscio
-
Patent number: 5527483Abstract: Nonaqueous gelled automatic dishwashing compositions containing a mixture of a protease enzyme and an amylase enzyme have been found to be very useful in the removal of protein and carbohydrate soils from dishware at operating temperatures of 100.degree. F. to 140.degree. F.Type: GrantFiled: March 31, 1994Date of Patent: June 18, 1996Assignee: Colgate Palmolive Co.Inventors: Divaker Kenkare, Nagaraj Dixit, Patrick Durbut
-
Patent number: 5487906Abstract: A method for the preparation of an aqueous stable premix containing a stannous ion releasing compound useful in the manufacture of an aqueous oral care composition containing a stable stannous ion releasing compound which comprises first dissolving the stannous compound in an aqueous solution of critic acid or its alkali metal salt to prepare the aqueous premix to the vehicle of the oral care composition.Type: GrantFiled: December 15, 1994Date of Patent: January 30, 1996Assignee: Colgate-Palmolive CompanyInventors: Nagaraj Dixit, Gary Durga, Michael R. Burke, Michael Prencipe, Suryakant Patel
-
Patent number: 5202046Abstract: Automatic dishwasher detergent composition is formulated as a linear viscoelastic, pseudoplastic, gel-like aqueous product of exceptionally good physical stability, low bottle residue, low cup leakage, and improved cleaning performance. Linear viscoelasticity and pseudoplastic behavior is attributed by incorporation of cross-linked high molecular weight polyacrylic acid type thickener. Potassium to sodium weight ratios of at least 1/1 minimize amount of undissolved solid particles to further contribute to stability and pourability. Control of incorporated air bubbles functions to provide the product with a bulk density of about 1.35 to 1.40 g/cc which roughly corresponds to the density of the liquid phase. Stearic acid or other fatty acid or salt further improve physical stability.Type: GrantFiled: June 7, 1991Date of Patent: April 13, 1993Assignee: Colgate-Palmolive Co.Inventors: Nagaraj Dixit, Makarand Shevade, Rhyta Roundis, Marta Delsignore
-
Patent number: 5064553Abstract: Automatic dishwasher detergent composition is formulated as a linear viscoelastic, pseudoplastic, gel-like aqueous product of exceptionally good physical stability, low bottle residue, low cup leakage, and improved cleaning performance. Linear viscoelasticity and pseudoplastic behavior is attributed by incorporation of cross-linked high molecular weight polyacrylic acid type thickener. Potassium to sodium weight ratios of at least 1/1 minimize amount of undissolved solid particles to further contribute to stability and pourability. Control of incorporated air bubbles functions to provide the product with a bulk density of about 1.35 to 1.40 g/cc which roughly corresponds to the density of the liquid phase. Stearic acid or other fatty acid or salt further improves physical stability.Type: GrantFiled: May 18, 1989Date of Patent: November 12, 1991Assignee: Colgate-Palmolive Co.Inventors: Nagaraj Dixit, Makarand Shevade, Rhyta Round