Patents by Inventor Kreisler S. Y. Lau
Kreisler S. Y. Lau 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: 6303733Abstract: Dielectric compositions encompassing one or more poly(arylene ether) polymers are provided. The dielectric compositions have the repetitive structural unit: where n=1 to 200, Y and Ar are each a divalent arylene radical, Y derived from bisphenol compounds of general formula HO—Y—OH, Ar derived from difluoro diarylacetylenes and/or ethynylated benzophenones of general formula F—Ar—F and Z is optionally hydrogen, a methyl group or derived from a monofluoro-benzophenone derivative of general formula Z—F. Such poly(arylene ether) polymers are employed with a variety of microelectronic devices, for example, integrated circuits and multichip modules.Type: GrantFiled: November 20, 1998Date of Patent: October 16, 2001Assignee: AlliedSignal Inc.Inventors: Kreisler S. Y. Lau, Tian-An Chen, Boris A. Korolev, Emma Brouk
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Patent number: 6291628Abstract: A polymeric low dielectric constant solution includes a low dielectric constant polymer dissolved in an aromatic aliphatic ether solvent. The polymer preferably is a poly(arylene ether) and the solvent preferably is anisole, methylanisole, phenetole or mixtures thereof. A process for forming a dielectric film on a substrate by spin-coating the polymeric solution is also provided.Type: GrantFiled: January 21, 1999Date of Patent: September 18, 2001Assignee: Allied Signal Inc.Inventors: Tian-An Chen, Kreisler S. Y. Lau, Qiang Zhao
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Patent number: 6124421Abstract: Dielectric compositions encompassing one or more poly(arylene ether) polymers are provided. The dielectric compositions have the repetitive structural unit: ##STR1## where n=0 to 1; m=0 to 1-n; and Y.sub.1, Y.sub.2, Ar.sub.1 and Ar.sub.2 are each a divalent arylene radical, Y.sub.1 and Y.sub.2 derived from biphenol compounds, Ar.sub.1 derived from difluoroarylethynes and Ar.sub.2 derived from difluoroaryl compounds. Where both Y.sub.1 and Y.sub.2 are derived from fluorene bisphenol, n=0.1 to 1. Such poly(arylene ether) polymers are employed with a variety of microelectronic devices, for example, integrated circuits and multichip modules.Type: GrantFiled: December 12, 1997Date of Patent: September 26, 2000Assignee: AlliedSignal Inc.Inventors: Kreisler S. Y. Lau, Tian-An Chen, Boris A. Korolev, Emma Brouk, Paul E. Schilling, Heike W. Thompson
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Patent number: 5292851Abstract: Polymer-ceramic networks in which the polymer chain is anchored in a cera network are formed from compounds of the formula ##STR1## where X is R', OR', OH, H, Cl, or Br,X is R', OR', Cl, or Br,R' is an alkyl group having 1 to 8 carbon atoms, andR is selected from the group consisting of phenyl and a phenyl-substituted benzoxazole group,or oligomers thereof. Methods of forming the monomer, oligomer, and polymer are disclosed. Related phthalocyanine polymers are also disclosed.Type: GrantFiled: August 10, 1992Date of Patent: March 8, 1994Assignee: The United States of America as represented by the Secretary of the NavyInventors: Kreisler S. Y. Lau, Abraham L. Landis, Thomas K. Dougherty
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Patent number: 5149764Abstract: Polymer-ceramic networks in which the polymer chain is anchored in a cera network are formed from compounds of the formula ##STR1## where X is R', OR', OH, H, Cl, or Br,X is R', OR', Cl, or Br,R' is an alkyl group having 1 to 8 carbon atoms, andR is selected from the group consisting of phenyl and a phenyl-substituted benzoxazole group,or oligomers thereof. Methods of forming the monomer, oligomer, and polymer are disclosed. Related phthalocyanine polymers are also disclosed.Type: GrantFiled: April 10, 1990Date of Patent: September 22, 1992Assignee: United States of America as represented by the Secretary of the NavyInventors: Kreisler S. Y. Lau, Abraham L. Landis, Thomas K. Dougherty
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Patent number: 4996101Abstract: Semi-interpenetrating polymer networks having improved processibility and compatibility are prepared by combining a linear polymer comprised of a thermoplastic polyisoimide and a short chain thermosetting polymer in the form of a cross-linkable oligomer comprised of a thermosetting imide or isoimide oligomer containing unsaturated terminal groups, e.g., an acetylene-, a maleimide-, a nadimide- or a benzocyclobutene-terminated imide or isoimide oligomer. In the resulting blend at least one of the diamine and dianhydride moieties of the structural backbone unit of the polyisoimide and of the cross-linkable oligomer are the same, and preferably both of the components of the blend have the same structural backbone unit.Type: GrantFiled: August 8, 1988Date of Patent: February 26, 1991Assignee: Lockheed CorporationInventors: Abraham L. Landis, Kreisler S. Y. Lau
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Patent number: 4916038Abstract: A new group of silane compounds in which silicon atoms are linked together by a hydrocarbon chain and which comprise phenyl groups substituted with an epoxy group or an ethenyl group. The compounds of the present invention have the formula ##STR1## where R.sub.1 is selected from the group consisting of: (a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms, and(b) a group having the formula ##STR2## where n=1 to 3m=0 to 5;R.sub.2 and R.sub.2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group; and R.sub.3 is selected from the group consisting of: ##STR3## where R.sub.4, R.sub.5, and R.sub.6 ae each selected from the group consisting of H, an alkyl group containing 1 to 4 carbon atoms, and an aryl group; and n=0 to 10.Type: GrantFiled: August 29, 1988Date of Patent: April 10, 1990Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Susan L. Oldham, William E. Elias, Stephen J. Bigus
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Patent number: 4874643Abstract: A method for rendering a substrate resistant to erosion by a plasma comprising oxygen by providing on the surface of the substrate a layer of a cured polymer of a compound having the formula ##STR1## where: R.sub.1 is selected from the group consisting of:(a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms, and(b) a group having the formula ##STR2## wherein n=1 to 3 m=0 to 5R.sub.2 and R.sub.2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group; and R.sub.Type: GrantFiled: July 13, 1988Date of Patent: October 17, 1989Assignee: Hughes Aircraft CompanyInventors: Susan L. Oldham, William E. Elias, Stephen J. Bigus, Kreisler S. Y. Lau
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Patent number: 4866156Abstract: Novel processes are provided for synthesizing 2,2-bis(4-fluorophenyl)hexafluoropropane and the use of this synthesized monomer in polymerization reactions to form poly(arylethers) or poly(arylthioethers). Synthesis of 2,2-bis(4-fluorophenyl)hexafluoropropane involves converting the commonly available compound Bisphenol AF to an amino-substituted form, followed by treatment with borofluoric acid and a nitrite, and then an aromatic solvent to obtain the monomer. The monomer can be mixed with either a dihydroxy diphenyl hexafluoropropane or a dimercapto diphenyl hexafluorpropane to cause a nucleophilic substitution reaction, thereby yielding the desired poly(arylether) or poly(arylthioether).Type: GrantFiled: July 29, 1987Date of Patent: September 12, 1989Assignee: Hughes Aircraft CopmanyInventors: Kreisler S. Y. Lau, Thomas K. Dougherty
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Patent number: 4861901Abstract: A new group of silane compounds in which silicon atoms are linked together by a hydrocarbon chain and which comprise phenyl groups substituted with an epoxy group or an ethenyl group. The compounds of the present invention have the formula ##STR1## where R.sub.1 is selected from the group consisting of:(a) an aliphatic hydrocarbon group containing 2 to 10 carbon atoms, and(b) a group having the formula ##STR2## where n=1 to 3m=0 to 5;R.sub.2 and R.sub.2 ' are each selected from the group consisting of an alkyl group containing 1 to 4 carbon atoms, an unsubstituted aryl group, and a substituted aryl group;and R.sub.3 is selected from the group consisting of: ##STR3## where R.sub.4, R.sub.5, and R.sub.6 are each selected from the group consisting of H, an alkyl group containing 1 to 4 carbon atoms, and an aryl group; and n=0 to 10.Type: GrantFiled: May 5, 1987Date of Patent: August 29, 1989Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Susan L. Oldham, William E. Elias, Stephen J. Bigus
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Patent number: 4827054Abstract: Novel processes are provided for synthesizing 2,2-bis(4-fluorophenyl)hexafluoropropane and the use of this synthesized monomer in polymerization reactions to form poly(arylethers) and poly(arylthioethers). Synthesis of 2,2-bis(4-fluorophenyl)hexafluoropropane involves converting the commonly available compound Bisphenol AF to an amino-substituted form, followed by treatment with borofluoric acid and a nitrite, and then an aromatic solvent to obtain the monomer. The monomer can be mixed with either a dihydroxy diphenyl hexafluoropropane or a dimercapto diphenyl hexafluorpropane to cause a nucleophilic substitution reaction, thereby yielding the desired poly(arylether) or poly(arylthioether).Type: GrantFiled: July 18, 1988Date of Patent: May 2, 1989Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Thomas K. Dougherty
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Patent number: 4814472Abstract: There are disclosed diethynylated diphenyl hexafluoropropane compounds, which are suitable for forming copolymers and carbon-carbon composites. These compounds are prepared in high yields by first providing a dihalogenated diphenyl hexafluoropropane compound, coupling the dihalogenated compound with ethynyltrimethylsilane in the presence of an organometallic catalyst to form a silylated ethynyl terminated diphenyl substituted compound and subsequently desilylating the compound to form the desired diethynylated diphenyl hexafluoropropane compound.Type: GrantFiled: February 14, 1985Date of Patent: March 21, 1989Assignee: Hughes Aircraft CompanyInventor: Kreisler S. Y. Lau
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Patent number: 4788268Abstract: Epoxysilicone compounds are prepared by first reacting a dibromobenzene compound with magnesium in anhydrous ether solvent to form a Grignard reagent and subsequently reacting the Grignard reagent with allyl bromide to form a (bromophenyl)propene compound. Next, the (bromophenyl)propene compound is converted to the corresponding Grignard reagent, which is then reacted with a compound of the formula I below ##STR1## where n=1 to 6,R.sub.1 and R.sub.2 are each chosen from the group consisting of a C.sub.1 to C.sub.4 alkyl group, a substituted aryl group, and an unsubstituted aryl group.in tetrahydrofuran solvent to form an allyl-terminated silicone compound of formula II below ##STR2## Finally, the allyl-terminated silicone compound is reacted with a chosen epoxidizing agent to form the epoxysilicone compound of formula III below.Type: GrantFiled: May 5, 1987Date of Patent: November 29, 1988Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Susan L. Oldham, William E. Elias
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Patent number: 4782184Abstract: A method is disclosed for making amino-substituted ethynlated biphenyl compounds, which includes selectively nitrating symmetrically substituted biphenyl compounds, reacting the resulting nitro-substituted aromatic compound with a copper acetylide to replace the iodo substituents with ethynyl groups, and then reacting the ethynylated, nitro-substituted aromatic compound with hydrogen in the gas phase to reduce the nitro groups to amino groups. The preferred nitrating agent is nitronium trifluoromethanesulfonate, made by reaction of anhydrous nitric acid with trifluoromethanesulfonic anhydride in an anhydrous solvent.Type: GrantFiled: December 19, 1984Date of Patent: November 1, 1988Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Thomas K. Dougherty
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Patent number: 4722985Abstract: Derivatives of diphenylhexafluoropropane having the formula: ##STR1## where R is an unsubstituted or substituted alkylene, an epoxy, a silyl or alkoxysilyl group; and where X and Y are hydrogen or halogen. The derivatives are useful in formulating polymer structures.Type: GrantFiled: December 1, 1986Date of Patent: February 2, 1988Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, William J. Kelleghan
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Patent number: 4719258Abstract: Derivatives of diphenylhexafluoropropane having the formula: ##STR1## where R is an unsubstituted or substituted alkylene, an epoxy, a silyl or alkoxysilyl group; and where X and Y are hydrogen or halogen. The derivatives are useful in formulating polymer structures.Type: GrantFiled: December 1, 1986Date of Patent: January 12, 1988Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, William J. Kelleghan
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Patent number: 4708991Abstract: Ethynylphenyl derivatives of diphenylhexafluoropropane having the formula: ##STR1## where X is oxygen or sulfur and each of R, R.sub.1, or R.sub.2 is hydrogen or ethynyl. The compounds are useful in forming polymer structures, either homopolymers or copolymers.Type: GrantFiled: September 24, 1985Date of Patent: November 24, 1987Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, William J. Kelleghan
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Patent number: 4695655Abstract: Ethynylphenyl derivatives of diphenylhexafluoropropane having the formula: ##STR1## where X is oxygen or sulfur and each of R, R.sub.1, or R.sub.2 is hydrogen or ethynyl. The compounds are useful in forming polymer structures, either homopolymers or copolymers.Type: GrantFiled: September 4, 1984Date of Patent: September 22, 1987Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, William J. Kelleghan
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Patent number: 4649207Abstract: Derivatives of diphenylhexafluoropropane having the formula: ##STR1## where R is an unsubstituted or substituted alkylene, an epoxy, a silyl or alkoxysilyl group; and where X and Y are hydrogen or halogen. The derivatives are useful in formulating polymer structures.Type: GrantFiled: May 13, 1986Date of Patent: March 10, 1987Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, William J. Kelleghan
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Patent number: 4615842Abstract: A method is disclosed for making amino-substituted ethynylated biphenyl compounds, which includes selectively nitrating symmetrically substituted biphenyl compounds, reacting the resulting nitro-substituted aromatic compound with a copper acetylide to replace the iodo substituents with ethynyl groups, and then reacting the ethynylated, nitro-substituted aromatic compound with hydrogen in the gas phase to reduce the nitro groups to amino groups. The preferred nitrating agent is nitronium trifluoromethanesulfonate, made by reaction of anhydrous nitric acid with trifluoromethanesulfonic anhydride in an anhydrous solvent.Type: GrantFiled: September 23, 1985Date of Patent: October 7, 1986Assignee: Hughes Aircraft CompanyInventors: Kreisler S. Y. Lau, Thomas K. Dougherty