Patents by Inventor Grish Chandra
Grish Chandra 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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Publication number: 20120070908Abstract: Present invention deals with a new immuno-reagent comprising hapten (MPAD)-protein-gold for pesticides detection. The conjugate MPAD-protein-gold competes with the analyte of interest for a finite number of binding sites provided by anti-atrazine antibodies coated on nitrocellulose membrane. The newly developed conjugate has a long shelf life with high stability at 4° C. The dynamic concentration range for standard atrazine solutions shows a linear inhibition (decrease in intensity of color) between 10 ppb to 1 ppm atrazine in water samples.Type: ApplicationFiled: April 14, 2011Publication date: March 22, 2012Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Chander Raman SURI, Jas Deep Kaur, Kanwar Vikas Singh, Grish Chandra Varshney, Manoj Raje
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Patent number: 7419640Abstract: The present invention is based on rapid displacement of solvents under mild vacuum in solution-solid phase reaction of immunocomplex [Ijsselmuiden et al., J. Immunol. Methods, 6 (1989): 35]. In the present invention, this is achieved by a microporous absorbing pad upon which a nitrocellulose transfer membrane is placed. The absorbing pad under mild vacuum generated/regulated by running tap effectively filters out the unbound ligand and rinsing solutions through transfer membrane, thus enhancing the reaction kinetics of immunocomplex. This mechanism, in turn reduces the incubation steps of antibody-antigen reaction from hours to few minutes, allowing total assay time in less than 20 minutes.Type: GrantFiled: March 20, 2003Date of Patent: September 2, 2008Assignee: Council of Scientific and Industrial ResearchInventors: Chander Raman Suri, Manoj Raje, Grish Chandra Varshney
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Publication number: 20040185577Abstract: The present invention is based on rapid displacement of solvents under mild vacuum in solution-solid phase reaction of immunocomplex [Ijsselmuiden et al., J. Immunol. Methods, 6 (1989): 35]. In the present invention, this is achieved by a microporous absorbing pad upon which a nitrocellulose transfer membrane is placed. The absorbing pad under mild vacuum generated/regulated by running tap effectively filters out the unbound ligand and rinsing solutions through transfer membrane, thus enhancing the reaction kinetics of immunocomplex. This mechanism, in turn reduces the incubation steps of antibody-antigen reaction from hours to few minutes, allowing total assay time in less than 20 minutes.Type: ApplicationFiled: March 20, 2003Publication date: September 23, 2004Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCHInventors: Chander Raman Suri, Manoj Raje, Grish Chandra Varshney
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Patent number: 5935638Abstract: A silicon dioxide containing coating can be used for multi-layer hermetic coatings, interlayer dielectric coatings, and flat panel display coatings. The coating is formed by applying a coating composition comprising polysilastyrene to a substrate and heating the polysilastyrene in an oxidizing atmosphere.Type: GrantFiled: August 6, 1998Date of Patent: August 10, 1999Assignee: Dow Corning CorporationInventors: Grish Chandra, Loren Andrew Haluska
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Patent number: 5912047Abstract: A borosilicate containing coating is formed on an electronic substrate by applying a borosilazane polymer on the substrate and converting it to borosilicate by heating in an oxidizing environment. The resultant thick planarizing coatings are useful as protective coatings and dielectric inner layers.Type: GrantFiled: March 25, 1993Date of Patent: June 15, 1999Assignee: Dow Corning CorporationInventors: Grish Chandra, Loren Andrew Haluska, Gregg Alan Zank
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Patent number: 5904791Abstract: A method of adhering an electronic component to substrate in which a layer of a preceramic polymer is applied between the electronic component and the substrate to which it is to be adhered followed by heating to convert the preceramic polymer into a ceramic. The method forms a strong bond which is not affected by the environment. The method is valuable for adhering integrated circuit chips to carriers or circuit boards.Type: GrantFiled: June 2, 1997Date of Patent: May 18, 1999Assignee: Dow Corning CorporationInventors: Clayton R. Bearinger, Robert Charles Camilletti, Grish Chandra, Theresa Eileen Gentle, Loren Andrew Haluska
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Patent number: 5789325Abstract: A silica-containing coating is formed on an electronic substrate by applying a polycarbosilane on the substrate and converting it to a silica-containing material by heating in an oxidizing environment. The resultant thick planarizing coatings are useful as protective coatings and dielectric inner layers.Type: GrantFiled: April 29, 1996Date of Patent: August 4, 1998Assignee: Dow Corning CorporationInventors: Grish Chandra, Loren Andrew Haluska, Keith Winton Michael
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Patent number: 5616202Abstract: Disclosed is a method of increasing the adhesion between gold and silica derived from hydrogen silsesquioxane resin. The method comprises joining the gold and silica followed by annealing under an oxidizing atmosphere.Type: GrantFiled: June 26, 1995Date of Patent: April 1, 1997Assignee: Dow Corning CorporationInventors: Robert C. Camilletti, Grish Chandra, Keith W. Michael
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Patent number: 5481135Abstract: This invention relates to integrated circuits which are protected from the environment. Such circuits are hermetically sealed by applying ceramic layers to the top metallization.Type: GrantFiled: March 10, 1994Date of Patent: January 2, 1996Assignee: Dow Corning CorporationInventors: Grish Chandra, Keith W. Michael
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Patent number: 5358739Abstract: A silica coating is formed on an electronic substrate by applying a silazane polymer on the substrate and converting it to silica by heating in an oxidizing environment. The resultant thick planarizing coatings are useful as protective coatings and dielectric inner layers.Type: GrantFiled: March 10, 1994Date of Patent: October 25, 1994Assignee: Dow Corning CorporationInventors: Ronald H. Baney, Grish Chandra, Loren A. Haluska
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Patent number: 5262201Abstract: This invention relates to a method of forming a ceramic coating on a substrate. The method comprises coating the substrate with a solution comprising a solvent and a silica precursor followed by evaporating the solvent to form a preceramic coating. The preceramic coating is then exposed to an environment comprising ammonium hydroxide or an environment to which water vapor and ammonia vapor have been added to facilitate conversion of the silica precursor to the ceramic coating. The preceramic coating is then subjected to a temperature sufficient to facilitate conversion of said preceramic coating to a ceramic coating.Type: GrantFiled: June 4, 1990Date of Patent: November 16, 1993Assignee: Dow Corning CorporationInventors: Grish Chandra, Loren A. Haluska, Keith W. Michael, Carl J. Bilgrien
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Patent number: 5059448Abstract: The present invention is based on the discovery that rapid thermal processing (RTP) can convert hydrogen silsesquioxane resin coatings to ceramic silica coatings. This technique is especially valuable for the application of protective and dielectric layers on electronic devices.Type: GrantFiled: June 18, 1990Date of Patent: October 22, 1991Assignee: Dow Corning CorporationInventors: Grish Chandra, Theresa E. Martin
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Patent number: 4806612Abstract: Preceramic actylenic polysilanes are described which contain --(CH.sub.2).sub.w C.tbd.CR' groups attached to silicon where w is an integer from 0 to 3 and where R' is hydrogen, an alkyl radical containing 1 to 6 carbon atoms, a phenyl radical, or an --SiR"'.sub.3 radical wherein R"' is an alkyl radical containing 1 to 4 carbon atoms. The acetylenic polysilanes are prepared by reacting chlorine- or bromine-containing polysilanes with either a Grignard reagent of general formula R'C.tbd.C(CH.sub.2).sub.w MgX' where w is an integer from 0 to 3 and X' is chlorine, bromine, or iodine or an organolithium compound of general formula R'C.tbd.C(CH.sub.2).sub.w Li where w is an integer from 0 to 3. The acetylenic polysilanes can be converted to ceramic materials by pyrolysis at elevated temperatures under an inert atmosphere.Type: GrantFiled: August 10, 1987Date of Patent: February 21, 1989Assignee: Dow Corning CorporationInventors: Grish Chandra, Gregg A. Zank
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Patent number: 4788313Abstract: Carboxyalkyl-substituted organopolysiloxanes are prepared by hydrolysis of a silalactone composition having the formula ##STR1## where n has an average value greater than zero, R and Q are hydrocarbon and X is Cl or Br. Silicon-containing compounds having the formula R.sub.a Z.sub.b SiO.sub.(4-a-b)/2, where Z is a hydrolyzable radical, can be cohydrolyzed therewith. The novel silalactone composition is prepared by gently heating a mixture of an ester having the formula X.sub.2 R SiQCO.sub.2 R' and a halide salt catalyst, such as tetrabutylammonium bromide.Type: GrantFiled: December 23, 1983Date of Patent: November 29, 1988Assignee: Dow Corning CorporationInventors: Grish Chandra, Donnie R. Juen
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Patent number: 4762895Abstract: A process for the preparation of preceramic metallopolysilanes is described. The process consists of contacting and reacting organohalogendisilanes with metal-containing compounds in the presence of a redistribution catalyst in an inert, essentially anhydrous atmosphere while removing volatile byproducts. The resulting metallopolysilanes contain significant amounts of aluminum, boron, chromium, lanthanum, molybdenum, neodymium, niobium, samarium, tantalum, titanium, tungsten, vanadium, yttrium, or zirconium. Such metallopolysilanes can be prepared with relatively low oxygen levels. These polymers are useful as chemical intermediates to synthesize organosilicon materials or polymers. These polymers are also useful, when fired at high temperatures, to form ceramic materials.Type: GrantFiled: August 10, 1987Date of Patent: August 9, 1988Assignee: Dow Corning CorporationInventors: Grish Chandra, Gregg A. Zank
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Patent number: 4631310Abstract: A simplified method of manufacture for platinum (O) alkyne complexes is disclosed, as well as novel platinum (O) alkyne complexes per se. The complexes are made by reacting platinum-vinylsiloxane complexes with alkynes. The complexes are used in hydrosilylation, hydrogenation, isomerization and oligomerization reactions. Curable silicones using these platinum (O) alkyne complexes as curing catalysts are also disclosed.Type: GrantFiled: January 30, 1986Date of Patent: December 23, 1986Assignee: Dow Corning CorporationInventors: Grish Chandra, Peter Y. Kwai Lo
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Patent number: 4603215Abstract: A simplified method of manufacture for platinum (O) alkyne complexes is disclosed, as well as novel platinum (O) alkyne complexes per se. The complexes are made by reacting platinum-vinylsiloxane complexes with alkynes. The complexes are used in hydrosilylation, hydrogenation, isomerization and oligomerization reactions. Curable silicones using these platinum (O) alkyne complexes as curing catalysts are also disclosed.Type: GrantFiled: August 20, 1984Date of Patent: July 29, 1986Assignee: Dow Corning CorporationInventors: Grish Chandra, Peter Y. K. Lo
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Patent number: 4593084Abstract: A new method for making platinum-phosphine complexes and novel platinum-phosphine-vinylsiloxane complexes are disclosed. These complexes can be used in curable silicone compositions, thus providing curable silicone compositions of greatly enhanced stability at room temperature. The ability of the compositions to cure at elevated temperatures is not significantly compromised.Type: GrantFiled: November 19, 1984Date of Patent: June 3, 1986Assignee: Doe Corning CorporationInventors: Grish Chandra, Peter Y. K. Lo
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Patent number: 4559227Abstract: A conditioning shampoo composition is disclosed containing a nonionic surfactant of the alkanolamide or amine oxide type, an amine functional methylsiloxane polymer, a detersive surfactant of the anionic or amphoteric type, and water. A method of preparing the shampoo composition as a stable solution is also disclosed. During use, the shampoo composition simultaneously cleanses the hair and deposits the siloxane polymer conditioning component on the hair.Type: GrantFiled: October 31, 1984Date of Patent: December 17, 1985Assignee: Dow Corning CorporationInventors: Grish Chandra, Gretchen S. Kohl, James A. Tassoff
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Patent number: 4549979Abstract: New granular detergent compositions suitable for heavy duty laundry and automatic dishwashing applications are disclosed. The detergents contain organic surfactant combined with a siliconate-silicate product that provides the compositions with improved dissolution characteristics in water. The siliconate-silicate component contains silicate units and anionic functional organosiliconate units represented by the formula (MO).sub.a O.sub.(3-a)/2 Si--R--Y.sub.b wherein Y represents the anionic functional group, R is an organic linking group, b is an integer from 1 to 3, a has a value of from 0.5 to 2, and M is hydrogen or alkali metal.Type: GrantFiled: March 27, 1984Date of Patent: October 29, 1985Assignee: Dow Corning CorporationInventors: Grish Chandra, Jeffrey A. Kosal, Lenin J. Petroff, Edwin P. Plueddemann