Patents by Inventor Eric Thomas Gohr
Eric Thomas Gohr 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: 20120135256Abstract: This disclosure relates to a process of manufacturing polymeric film, the process comprises (a) co-extruding (i) a first polymeric composition having a non-organic cavitating agent, (ii) a second polymeric composition having EVOH to form a multilayer sheet; and (b) orienting the co-extruded sheet in MD, TD or both, wherein the first polymeric composition and/or the second polymeric composition comprises recycled polymeric composition having EVOH and the non-organic cavitating agent.Type: ApplicationFiled: May 20, 2010Publication date: May 31, 2012Inventors: Kevin M. Donovan, David Liestman, Rajan Verghese, Eric Thomas Gohr, Rich F. Bray, Justin T. Ford
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Patent number: 7288579Abstract: A method to reduce haze in the production of fire resistant polycarbonate compositions comprising flame retardant salts, wherein the salt is blended with a first polycarbonate to form a concentrate, and the concentrate is then added to a second polycarbonate resin.Type: GrantFiled: December 17, 2003Date of Patent: October 30, 2007Assignee: General Electric CompanyInventors: Eric Thomas Gohr, Niles Richard Rosenquist, Rajendra Kashinath Singh, Gregory James Stoddard, Shahrzad Zarkoob, Johannes Martinus Dina Goossens
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Patent number: 6833096Abstract: A method for removing volatile components from wet, polymer powders using a vacuum vented extruder is described. Polymer powders containing substantial amounts of water, 1-20% by weight, are rapidly converted to polymer compositions containing less than about 0.5% by weight water at high throughput rates while avoiding complications resulting from excessive steam backflow through the extruder feed throat. The method provides a screw design comprising a powder seal section upstream of kneading and melting sections of the extruder. Steam generated as the polymer is heated flows downstream to one or more vacuum vents for removal. The partially devolatilized polymer melt is then subjected to additional melt kneading and vacuum venting. The method converts wet polycarbonate powder containing residual methylene chloride to essentially dry polycarbonate powder containing less than about 1 ppm methylene chloride.Type: GrantFiled: August 29, 2001Date of Patent: December 21, 2004Assignee: General Electric CompanyInventors: Hua Wang, Eric Thomas Gohr
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Publication number: 20040132865Abstract: A method to reduce haze in the production of fire resistant polycarbonate compositions comprising flame retardant salts, wherein the salt is blended with a first polycarbonate to form a concentrate, and the concentrate is then added to a second polycarbonate resin.Type: ApplicationFiled: December 17, 2003Publication date: July 8, 2004Inventors: Eric Thomas Gohr, Niles Richard Rosenquist, Rajendra Kashinath Singh, Gregory James Stoddard, Shahrzad Zarkoob, Johannes Martinus Dina Goossens
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Patent number: 6730720Abstract: A method to reduce haze in the production of fire resistant polycarbonate compositions comprising flame retardant salts, wherein the salt is blended with a first polycarbonate to form a concentrate, and the concentrate is then added to a second polycarbonate resin.Type: GrantFiled: December 27, 2000Date of Patent: May 4, 2004Assignee: General Electric CompanyInventors: Eric Thomas Gohr, Niles Richard Rosenquist, Rajendra Kashinath Singh, Gregory James Stoddard, Shahrzad Zarkoob, Johannes Martinus Dina Goossens
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Publication number: 20030067089Abstract: A method for removing volatile components from wet, polymer powders using a vacuum vented extruder is described. Polymer powders containing substantial amounts of water, 1-20% by weight, are rapidly converted to polymer compositions containing less than about 0.5% by weight water at high throughput rates while avoiding complications resulting from excessive steam backflow through the extruder feed throat. The method provides a screw design comprising a powder seal section upstream of kneading and melting sections of the extruder. Steam generated as the polymer is heated flows downstream to one or more vacuum vents for removal. The partially devolatilized polymer melt is then subjected to additional melt kneading and vacuum venting. The method converts wet polycarbonate powder containing residual methylene chloride to essentially dry polycarbonate powder containing less than about 1 ppm methylene chloride.Type: ApplicationFiled: August 29, 2001Publication date: April 10, 2003Applicant: General Electric CompanyInventors: Hua Wang, Eric Thomas Gohr
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Patent number: 6492485Abstract: The application relates to methods for producing a polycarbonate resin having a narrowed molecular weight distribution, specifically, the application relates to the use of a redistribution catalyst and a feedback loop control mechanism to prepare narrow molecular weight distribution resin.Type: GrantFiled: April 11, 2000Date of Patent: December 10, 2002Assignee: General Electric CompanyInventors: Eric Thomas Gohr, Chad David Mistele, Michael F. Shannon, Vijaykumar Hanagandi, Devesh Mathur, Patrick Joseph McCloskey
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Publication number: 20020123544Abstract: A method to reduce haze in the production of fire resistant polycarbonate compositions comprising flame retardant salts, wherein the salt is blended with a first polycarbonate to form a concentrate, and the concentrate is then added to a second polycarbonate resin.Type: ApplicationFiled: December 27, 2000Publication date: September 5, 2002Inventors: Eric Thomas Gohr, Niles Richard Rosenquist, Rajendra Kashinath Singh, Gregory James Stoddard, Shahrzad Zarkoob, Johannes Martinus Dina Goossens
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Patent number: 6365710Abstract: A method for removing volatile components from wet, solid polymeric materials on a vacuum vented extruder is described. Polymeric materials containing substantial amounts of water, 1-20 % by weight, are rapidly converted to polymer compositions containing less than about 0.5% by weight water at high throughput rates while avoiding complications resulting from excessive steam backflow through the extruder feed throat. The method utilizes a screw design comprising only forward flighted screw elements in an initial polymer melting and kneading zone. Steam generated as the polymer is heated and sheared flows downstream to a first vacuum vent for removal. The partially devolatilized polymer melt is then subjected to additional kneading and vacuum venting. The claimed method converts wet polycarbonate powder containing residual methylene chloride to essentially dry polycarbonate powder containing less than about 1 ppm methylene chloride.Type: GrantFiled: August 29, 2001Date of Patent: April 2, 2002Assignee: General Electric CompanyInventors: Hua Wang, Robert John Hossan, Eric Thomas Gohr
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Patent number: 6196823Abstract: A die clamp assembly for an extruder comprises at least one passage through which product being extruded flows. The die clamp assembly is attached to an extruder and comprises a last barrel that is connectable to the extruder. The last barrel comprising a flange and the extruder and last barrel define at least one passage through which product flows; at least one die body comprising at least one die body passage that communicates with the at least one passage; and at least one die plate that comprises at least one die plate passage that communicates with the die body passage and at least one opening so product can be extruded from the at least one opening. A clamp collar assembly connects corresponding peripheral surfaces of the last barrel to the die body, and comprises a closed position that connects the last barrel to the die body and an open position that permits separation of the last barrel and the die body.Type: GrantFiled: March 14, 2000Date of Patent: March 6, 2001Assignee: General Electric CompanyInventors: Dennis Joseph Coyle, Fernando Alves Silva, Eric Thomas Gohr, Ricky Joe Renschler
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Patent number: 6126430Abstract: A die clamp assembly for an extruder comprises at least one passage through which product being extruded flows. The die clamp assembly is attached to an extruder and comprises at least one adapter plate that is connectable to the extruder. The die clamp assembly also comprises at least one adapter plate passage that communicates with the passage of the extruder; at least one die body comprising at least one die body passage that communicates with the adapter plate passage; and at least one die plate that comprises at least one die plate passage that communicates with the die body passage and at least one opening so product can be extruded from the at least one opening. A clamp collar assembly connects corresponding peripheral surfaces of the adapter plate to the die body, and comprises a closed position that connects the adapter plate to the die body and an open position that permits separation of the adapter plate and the die body.Type: GrantFiled: August 5, 1998Date of Patent: October 3, 2000Assignee: General Electric CompanyInventors: Dennis Joseph Coyle, Fernando Alves Silva, Eric Thomas Gohr, Ricky Joe Renschler
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Patent number: 5650470Abstract: Polycarbonate compositions are redistributed by melt equilibration using diethyldimethylammonium hydroxide as the redistribution catalyst. This catalyst affords an odorless polycarbonate product having a very low residual amine level.Type: GrantFiled: June 7, 1996Date of Patent: July 22, 1997Assignee: General Electric CompanyInventors: Patrick Joseph McCloskey, Eric Thomas Gohr, Timothy Hans Lemmen