Patents by Inventor James C. W. Chien
James C. W. Chien 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: 6730818Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.Type: GrantFiled: May 22, 2002Date of Patent: May 4, 2004Assignee: Penzoil-Quaker State CompanyInventors: William J. Heilman, I-Ching Chiu, James C. W. Chien
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Patent number: 6586646Abstract: Various vinylidene-containing polymers are obtained in the presence of a single-site catalyst. For example, the polymers include ethylene/isobutene copolymer, ethylene/propylene/isobutene terpolymer, ethylene/styrene/isobutene terpolymer, ethylene/&agr;-methyl-styrene/isobutene terpolymer, propylene/isobutene copolymer, styrene/isobutene copolymer, and &agr;-methyl-styrene/isobutene copolymer. These polymers may be used to formulate lubricant oils.Type: GrantFiled: November 24, 1999Date of Patent: July 1, 2003Assignee: Pennzoil-Quaker State CompanyInventors: William J. Heilman, I-Ching Chiu, Wei Song, James C. W. Chien
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Publication number: 20020193647Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.Type: ApplicationFiled: May 22, 2002Publication date: December 19, 2002Applicant: Pennzoil-Quaker State CompanyInventors: William J. Heilman, I-Ching Chiu, James C. W. Chien
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Patent number: 6417416Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.Type: GrantFiled: June 19, 2000Date of Patent: July 9, 2002Assignee: Pennzoil-Quaker State CompanyInventors: William J. Heilman, I-Ching Chiu, James C. W. Chien
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Patent number: 6388148Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.Type: GrantFiled: March 7, 2001Date of Patent: May 14, 2002Assignee: Pennzoil-Quaker State CompanyInventors: William Heilmann, I-Ching Chiu, James C. W. Chien
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Publication number: 20010044562Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.Type: ApplicationFiled: March 7, 2001Publication date: November 22, 2001Applicant: Pennzoil-Quaker State CompanyInventors: William J. Heilman, I-Ching Chiu, James C.W. Chien
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Patent number: 6271322Abstract: Disclosed is a monocyclopentadienyl metal compound that can polymerize polyolefins as part of a catalyst system. The monocyclopentadienyl compound can specifically be (C5H4CH2CH2NMe2)TiCl3.Type: GrantFiled: July 20, 1999Date of Patent: August 7, 2001Inventors: Laughlin Gerard McCullough, James C. W. Chien, Juan Carlos Flores, Marvin D. Rausch
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Patent number: 6262324Abstract: A novel series of copolymers and terpolymers, useful as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.Type: GrantFiled: May 7, 1999Date of Patent: July 17, 2001Assignee: Pennzoil-Quaker State CompanyInventors: William Heilmann, I-Ching Chiu, James C. W. Chien
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Patent number: 6262203Abstract: Disclosed are a thermoplastic elastomeric polypropylene (and other olefin homopolymerized polymers) made using a metallocene catalyst and a single olefin monomer, and a method of preparing the same to produce a chain of alternating stereo regular crystallizable segments and stereo-irregular non-crystallizable polymerized segments, the former acting as physical crosslinks between tee non-crystallizable segments to form a thermoplastic elastomeric material having good elastomeric properties.Type: GrantFiled: May 13, 1998Date of Patent: July 17, 2001Assignee: The Academy of Applied ScienceInventors: James C. W. Chien, Marvin D. Rausch
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Patent number: 6177377Abstract: This invention relates to polymer blends and the process for preparing naturally compatibilized polyolefin blends using a “one-pot” polymerization of a single monomer, whereby two homopolymers having different structures are produced as well as a third block copolymer having alternating sequences of the two structural segments of the two homopolymers. The formation of the block copolymer is established by solvent extraction and 13C-NMR spectroscopy. The catalyst compositions enabling the direct synthesis of naturally compatibilized polymer blend is prepared by combining four components. The first two components are organometallic complexes of Group IVB or VIIIB elements. The third component is a cocatalyst which irreversibly reacts with at least one ligand on the transition metal complexes. The fourth component is a hydrocarbyl or oxyhydrocarbyl compound of Group IIIA metals, which functions as a cross-over agent.Type: GrantFiled: December 18, 1996Date of Patent: January 23, 2001Assignee: Amherst Polymer Technology, Inc.Inventor: James C. W. Chien
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Patent number: 6124400Abstract: This invention relates to polymer alloys and the "one-pot" polymerization process for preparing the same from a single monomer, wherein the product is comprised of two semi-crystalline homopolymers having different micro-structures and a well-defined block copolymer having alternating sequences of the two structural segments of the homopolymers, and with the formed alloy being "naturally" compatible without the need for thermomechanical mixing or addition of a compatibilizing additive, including the presence of a comonomer and formed with catalyst compositions enabling the direct synthesis of "naturally" compatibilized polymer alloy that combines four components: two components being organometallic complexes of Group IVB or VIII elements, a third component being a cocatalyst which irreversibly reacts with at least one nonhapto ligand on the transition metal complex, and a fourth component that is a cross-over agent selected from the group of hydrocarbyl or substituted hydrocarbyl compound of Group IIA, IIB orType: GrantFiled: September 10, 1998Date of Patent: September 26, 2000Assignee: Academy of Applied ScienceInventor: James C. W. Chien
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Patent number: 6124513Abstract: A novel series of copolymers and terpolymers, usefull as base oils for synthetic lubricants, are produced by polymerization of ethylene, an alpha-olefin, and optionally a third monomer comprising an alpha-olefin of 3 to 20 carbon atoms, in the presence of a combination catalyst comprising a compound of a transition metal of Group IVb of the Periodic Table and an aluminoxane. The copolymer or terpolymer may be further processed by thermal cracking to yield novel cracked polymers, and the cracked polymers may be hydrogenated. The copolymers or terpolymers may also be hydroisomerized. All the polymers are useful as base oils for lubricating oils and consumer products.Type: GrantFiled: June 20, 1997Date of Patent: September 26, 2000Assignee: Pennzoil-Quaker State CompanyInventors: William J. Heilman, I-Ching Chiu, James C. W. Chien
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Patent number: 6121377Abstract: This invention relates to thermoplastic elastomeric polyolefin alloys (preferably polypropylene alloys) and the processes for preparing naturally compatibilized polyolefin alloys using a "one-pot" polymerization of a single monomer (preferably propylene), whereby two homopolymers having different stereoisomeric structures are produced (preferably stereoregular and stereoirregular), as well as a third block copolymer having alternating sequences of the two structural segments of the two homopolymers; and wherein catalyst compositions are used enabling the direct synthesis of naturally compatibilized polymer blends comprising for components: two organometallic complexes of group IVB elements, a catalyst which irreversibly reacts with at least one ligand on the transition metal complexes converting it to catalytically active state, and a hydrocarbyl, substituted hydrocarbyl, or oxyhydrocarbyl compound of Group IIA, IIB, and IIIA metals, which functions as a cross-over agent.Type: GrantFiled: September 10, 1998Date of Patent: September 19, 2000Assignees: Academy of Applied Science, Rines and RinesInventor: James C. W. Chien
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Patent number: 5962714Abstract: Disclosed is a monocyclopentadienyl metal compound that can polymerize polyolefins as part of a catalyst system. The monocyclopentadienyl compound can specifically be (C.sub.5 H.sub.4 CH.sub.2 CH.sub.2 NMe.sub.2)TiCl.sub.3.Type: GrantFiled: October 2, 1996Date of Patent: October 5, 1999Inventors: Laughlin Gerard McCullough, James C.W. Chien, Juan Carlos Flores, Marvin D. Rausch
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Patent number: 5756614Abstract: A thermoplastic elastomeric polypropylene (and other olefin homopolymerized polymers) using a novel catalyst with a single monomer olefin, and method of preparing the same to produce a chain of alternating stereo regular crystallizable segments and stereo-irregular non-crystallizable polymerized segments, the former acting as physical crosslinks between the non-crystallizable segments to form a thermoplastic elastomeric material having good elastomeric properties.Type: GrantFiled: February 3, 1995Date of Patent: May 26, 1998Assignee: Academy of Applied ScienceInventors: James C. W. Chien, Marvin D. Rausch
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Patent number: 5525690Abstract: A process for the preparation of a polyolefin by polymerization of at least one olefin, the said process comprising contacting the at least one olefin with a catalytic system comprising a metallocene and a cocatalyst, wherein the metallocene is selected from the group consisting of rac-2,2-dimethylpropylidene(1-.eta..sup.5 -cyclopentadienyl)(1-,.eta..sup.5 -fluorenyl)dichlorometallocene of titanium, zirconium, hafnium and vanadium.Syndiotactic polypropylene having a melting temperature T.sub.m from 95.degree. to 160.degree. C., a syndiotactic pentad fraction [rrrr] from 0,91 to 0,96, a crystalline fraction f.sub.C from 25 to 50% and a viscosity-average molecular weight M.sub.v from 60,000 to 200,000.Type: GrantFiled: August 5, 1994Date of Patent: June 11, 1996Assignee: Solvay (Societe Anonyme)Inventors: James C. W. Chien, Marvin D. Rausch
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Patent number: 5352767Abstract: Novel and previously contra-indicated alpha-olefin/carbon monoxide alternating copolymers are disclosed, together with polymerization methods and novel catalysts therefor.Type: GrantFiled: January 13, 1994Date of Patent: October 4, 1994Assignee: University of Massachusetts - AmherstInventor: James C. W. Chien
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Patent number: 5318800Abstract: A method is disclosed of forming thin uniform micron range and submicron range aberration-resistant and hole-free high-temperature thermally stable metal oxide coatings upon metal, insulating and other substrates, involving the application of a polymer metal complex precursor solution to the substrate and appropriate firing for oxidation of the metal and the coating while burning off all traces of the polymer.Type: GrantFiled: December 24, 1992Date of Patent: June 7, 1994Assignee: Academy of Applied ScienceInventors: Benmin Gong, James C. W. Chien
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Patent number: 5314988Abstract: A process for forming a polymer (and the polymer formed thereby) for passivation, resist and bonding uses, for example, that is thermally stable at relatively high temperatures in excess of 400.degree. C., but is sensitive to electromagnetic radiation. The process includes forming a heteroatom ring polymer that includes a chain formed of a large number of closed aromatic rings such as polyimide groups. According to the present teaching, intervening moieties, (that is, chemical groupings) in the form of open ring precursors of the aromatic rings, such as polyamic acid groups are introduced between the successive closed aromatic rings, which destroy and/or delimit the colinear character and the coplanar character typical of the successive aromatic rings, thus rendering the aromatic rings sensitive to structural change by electromagnetic radiation exposure, and soluble in common organic solvents, but with the exposed HRP insoluble in resist developers.Type: GrantFiled: July 1, 1991Date of Patent: May 24, 1994Assignee: Academy of Applied Science, Inc.Inventor: James C. W. Chien
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Patent number: 5171735Abstract: A method for forming a high T.sub.c metal oxide superconductor in the form of a hollow fiber. The method includes the steps of: forming a polymer-metal complex precursor; filling a decomposable hollow fiber mold with the precursor; and heating the filled mold to decompose the mold and convert the precursor to a metal oxide superconductor in the form of a hollow fiber. Ag-doped metal oxide superconductor structures can also be produced by the above method.Type: GrantFiled: November 17, 1989Date of Patent: December 15, 1992Assignee: Academy of Applied ScienceInventor: James C. W. Chien