Patents by Inventor Allen Wai Yee Ko
Allen Wai Yee Ko 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: 8227556Abstract: A thermoplastic composition comprising recovered poly(arylene ether), less than or equal to 0.1 weight percent based on the total weight of the thermoplastic composition of a second recovered thermoplastic that gives off greater than or equal to 10 percent by mass of volatiles at a processing temperature for the thermoplastic composition; 0.025 to 4.0 weight percent, based on the total weight of the thermoplastic composition, of a third recovered thermoplastic selected from the group consisting of polyolefin, acrylonitrile-butadiene-styrene, polycarbonate, polycarbonate/acrylonitrile-butadiene-styrene blend, polymethyl methacrylate, polyamide, polyester, polycarbonate/polyester blend and combinations of two or more of the foregoing third recovered thermoplastics, wherein combinations of two or more of the foregoing third recovered thermoplastics are present in an amount of less than or equal to 10 weight percent, based on the total weight of the thermoplastic composition; and an optional virgin thermoplastic.Type: GrantFiled: June 21, 2011Date of Patent: July 24, 2012Assignee: Sabic Innovative Plastics IP B.V.Inventors: Allen Wai-Yee Ko, Michael L. Todt
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Publication number: 20110251325Abstract: A thermoplastic composition comprising recovered poly(arylene ether), less than or equal to 0.1 weight percent based on the total weight of the thermoplastic composition of a second recovered thermoplastic that gives off greater than or equal to 10 percent by mass of volatiles at a processing temperature for the thermoplastic composition; 0.025 to 4.0 weight percent, based on the total weight of the thermoplastic composition, of a third recovered thermoplastic selected from the group consisting of polyolefin, acrylonitrile-butadiene-styrene, polycarbonate, polycarbonate/acrylonitrile-butadiene-styrene blend, polymethyl methacrylate, polyamide, polyester, polycarbonate/polyester blend and combinations of two or more of the foregoing third recovered thermoplastics, wherein combinations of two or more of the foregoing third recovered thermoplastics are present in an amount of less than or equal to 10 weight percent, based on the total weight of the thermoplastic composition; and an optional virgin thermoplastic.Type: ApplicationFiled: June 21, 2011Publication date: October 13, 2011Applicant: SABIC INNOVATIVE PLASTICS IP B.V.Inventors: Allen Wai-Yee Ko, Michael L. Todt
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Patent number: 7964675Abstract: A thermoplastic composition comprising recovered poly(arylene ether), less than or equal to 0.1 weight percent based on the total weight of the thermoplastic composition of a second recovered thermoplastic that gives off greater than or equal to 10 percent by mass of volatiles at a processing temperature for the thermoplastic composition; 0.025 to 4.0 weight percent, based on the total weight of the thermoplastic composition, of a third recovered thermoplastic selected from the group consisting of polyolefin, acrylonitrile-butadiene-styrene, polycarbonate, polycarbonate/acrylonitrile-butadiene-styrene blend, polymethyl methacrylate, polyamide, polyester, polycarbonate/polyester blend and combinations of two or more of the foregoing third recovered thermoplastics, wherein combinations of two or more of the foregoing third recovered thermoplastics are present in an amount of less than or equal to 10 weight percent, based on the total weight of the thermoplastic composition; and an optional virgin thermoplastic.Type: GrantFiled: January 10, 2005Date of Patent: June 21, 2011Assignee: Sabic Innovative Plastics IP B.V.Inventors: Allen Wai-Yee Ko, Michael L. Todt
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Patent number: 6891073Abstract: A method for producing bisphenol includes introducing a phenol and a ketone into a fixed, supported catalytic bed reactor system in a downflow mode, reacting the phenol and the ketone to form a reaction mixture, and recovering the bisphenol isomer from the reaction mixture. The preferred bisphenol isomer is bisphenol A, or p,p?-bisphenol A, produced from the reaction of phenol and acetone. The reactor for producing the bisphenol A from the reaction of phenol and acetone includes an ion exchange resin catalyst disposed in a bed and packing randomly distributed throughout the ion exchange resin catalyst to improve heat transfer efficiency and reduce compression of the catalyst bed.Type: GrantFiled: December 23, 2003Date of Patent: May 10, 2005Assignee: General Electric CompanyInventors: Gaylord Michael Kissinger, Allen Wai-Yee Ko, Michael D. Szillat, Brian T. Carvill
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Publication number: 20040136887Abstract: A method for producing bisphenol includes introducing a phenol and a ketone into a fixed, supported catalytic bed reactor system in a downflow mode, reacting the phenol and the ketone to form a reaction mixture, and recovering the bisphenol isomer from the reaction mixture. The preferred bisphenol isomer is bisphenol A, or p,p′-bisphenol A, produced from the reaction of phenol and acetone. The reactor for producing the bisphenol A from the reaction of phenol and acetone includes an ion exchange resin catalyst disposed in a bed and packing randomly distributed throughout the ion exchange resin catalyst to improve heat transfer efficiency and reduce compression of the catalyst bed.Type: ApplicationFiled: December 23, 2003Publication date: July 15, 2004Inventors: Gaylord Michael Kissinger, Allen Wai-Yee Ko, Michael D. Szillat, Brian T. Carvill
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Patent number: 6703530Abstract: A method for producing bisphenol includes introducing a phenol and a ketone into a fixed, supported catalytic bed reactor system in a downflow mode, reacting the phenol and the ketone to form a reaction mixture, and recovering the bisphenol isomer from the reaction mixture. The preferred bisphenol isomer is bisphenol A, or p,p′-bisphenol A, produced from the reaction of phenol and acetone. The reactor for producing the bisphenol A from the reaction of phenol and acetone includes an ion exchange resin catalyst disposed in a bed and packing randomly distributed throughout the ion exchange resin catalyst to improve heat transfer efficiency and reduce compression of the catalyst bed.Type: GrantFiled: February 28, 2002Date of Patent: March 9, 2004Assignee: General Electric CompanyInventors: Gaylord Michael Kissinger, Allen Wai-Yee Ko, Michael D. Szillat, Brian T. Carvill
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Publication number: 20030166976Abstract: A method for producing bisphenol includes introducing a phenol and a ketone into a fixed, supported catalytic bed reactor system in a downflow mode, reacting the phenol and the ketone to form a reaction mixture, and recovering the bisphenol isomer from the reaction mixture. The preferred bisphenol isomer is bisphenol A, or p,p′-bisphenol A, produced from the reaction of phenol and acetone. The reactor for producing the bisphenol A from the reaction of phenol and acetone includes an ion exchange resin catalyst disposed in a bed and packing randomly distributed throughout the ion exchange resin catalyst to improve heat transfer efficiency and reduce compression of the catalyst bed.Type: ApplicationFiled: February 28, 2002Publication date: September 4, 2003Inventors: Gaylord Michael Kissinger, Allen Wai-Yee Ko, Michael D. Szillat, Brian T. Carvill
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Patent number: 6489372Abstract: Polymer are removed from organic solvent-polymer mixtures by preparing a liquid-liquid dispersion of finely dispersed solvent droplets containing polymer in water, adding this liquid-liquid dispersion to a stirred vessel containing water or other suitable liquid and rapidly evaporating the solvent to produce a slurry of the polymer in a liquid from which the solid polymer particles are recovered.Type: GrantFiled: October 17, 2000Date of Patent: December 3, 2002Assignee: General Electric CompanyInventors: Qiwei He, Paul Russell Wilson, Paul William Buckley, Allen Wai Yee Ko, Larry Allen Divins, William Lee Gately, Ganesh Kailasam
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Patent number: 6369190Abstract: This invention relates to a method for purifying a polycarbonate resin solution resulting from an interfacial polymerization process. More particularly, this invention provides for the use of at least one static mixer to facilitate separation of the catalyst used to prepare the polycarbonate from the polycarbonate resin solution.Type: GrantFiled: November 14, 2000Date of Patent: April 9, 2002Assignee: General Electric CompanyInventors: Mingjie Zhu, Allen Wai-Yee Ko
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Patent number: 6214892Abstract: This invention relates to a method of recovering a polymer from an organic mixture comprising polymer and an organic solvent, the method comprising: a) admixing an aqueous solution and the organic mixture by the application of a combined mechanical and hydraulic shear force, the combined mechanical and shear force being sufficient to form a liquid-liquid dispersion; b) removing the organic solvent from the liquid-liquid dispersion thereby forming a remaining solution; and c) separating the polymer from the remaining solution. In one embodiment the polymer is a polycarbonate prepared by the interfacial method, and the organic solvent is methylene chloride.Type: GrantFiled: December 23, 1999Date of Patent: April 10, 2001Assignee: General Electric CompanyInventors: Qiwei He, Paul Russell Wilson, Paul William Buckley, Allen Wai Yee Ko, Larry Allen Divins
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Patent number: 6103855Abstract: A method of preparing a polycarbonate comprising the steps of:a) charging at least one dihydroxy compound, an inert solvent, water, caustic, carbonyl halide, and catalyst to a vessel, and maintaining the pH of the reaction mixture between about 4 and about 12 during charging; andb) within an interval of between 0 and about 90% of the total carbonyl halide addition to the vessel, activating a reaction system that produces monofunctional aromatic chloroformates (MAC) and introducing the MAC to the vessel within the interval of 0 to about 90% of the total carbonyl halide addition to the vessel; where the MAC reaction system is coupled with the vessel, and where means are provided for delivery of the MAC from the reaction system to the vessel.Type: GrantFiled: March 30, 1999Date of Patent: August 15, 2000Assignee: General Electric CompanyInventors: James Manio Silva, David Michel Dardaris, Larry Ivis Flowers, James Franklin Hoover, Allen Wai-Yee Ko