Patents by Inventor George E. Rotter
George E. Rotter 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: 7214415Abstract: Monolayer packages comprised of an oxygen scavenging composition suitable for direct contact with package contents and recycle with other polyester bottles are disclosed. The oxygen scavenging composition is comprised of a modified copolymer which is comprised of predominantly polyester segments and an oxygen scavenging amount of oxygen scavenging segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. Use of these oxygen scavenging copolymers in bottles provides a clear and rigid monolayer bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolymers of this invention are over 99 wt % PET and contain less than 50 ppb of extractable components.Type: GrantFiled: February 8, 2005Date of Patent: May 8, 2007Assignee: BP Corporation North America Inc.Inventors: James M. Tibbitt, Paul J. Cahill, George E. Rotter, David P. Sinclair, Gary T. Brooks, Raymond T. Behrends
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Patent number: 6863988Abstract: Monolayer packages comprised of an oxygen scavenging composition suitable for direct contact with package contents and recycle with other polyester bottles are disclosed. The oxygen scavenging composition is comprised of a modified copolymer which is comprised of predominantly polyester segments and an oxygen scavenging amount of oxygen scavenging segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. Use of these oxygen scavenging copolymers in bottles provides a clear and rigid monolayer bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolymers of this invention are over 99 wt % PET and contain less than 50 ppb of extractable components.Type: GrantFiled: October 25, 2001Date of Patent: March 8, 2005Assignee: BP Corporation North America Inc.Inventors: James M. Tibbitt, Paul J. Cahill, George E. Rotter, David P. Sinclair, Gary T. Brooks, Raymond T. Behrends
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Publication number: 20040109983Abstract: Improvements in compositions, composites, and methods for construction of weather resistant and insulated roofs are disclosed. The type of roofs to which these improvements apply are typically known as built up roofs. Built up roofs feature a substrate as an inner layer normally adjacent to and attached to the exterior of an unimproved roof surface. This invention is directed to improved foamed resin substrates used in such roof constructions. Alternating layers of hot asphalt and roofing felt are applied to the foam substrate layer. In prior art roofs, the foamed resin substrates could not withstand the direct application of hot molten asphalt to the foam surface which necessitated use of an isolation layer between the foamed resin layer and the first asphalt layer. This invention discloses compositions, composites, and methods involving direct application of hot asphalt to specially formulated and thermally resistant polyester foam resin substrate layers at temperatures up to 500° F.Type: ApplicationFiled: December 2, 2003Publication date: June 10, 2004Inventors: George E. Rotter, John L. Melquist, Robert B. Morland, Donald E. Rubis
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Patent number: 6558762Abstract: Multilayered plastic bottles are disclosed having oxygen scavenging capacity sufficient to maintain substantially zero or near zero (depending on product requirements) presence of oxygen in the bottle cavity for the planned shelf life of the bottled product under specified storage conditions. The bottles feature a layer comprised of oxygen scavenger copolyester and may be used for bottling beer and other products requiring nearly total absence of oxygen for the duration of the target product shelf life.Type: GrantFiled: March 28, 2002Date of Patent: May 6, 2003Assignee: BP Corporation North America Inc.Inventors: Paul J. Cahill, George E. Rotter, Stephen Y. Chen
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Publication number: 20020183448Abstract: Monolayer packages comprised of an oxygen scavenging composition suitable for direct contact with package contents and recycle with other polyester bottles are disclosed. The oxygen scavenging composition is comprised of a modified copolymer which is comprised of predominantly polyester segments and an oxygen scavenging amount of oxygen scavenging segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. Use of these oxygen scavenging copolymers in bottles provides a clear and rigid monolayer bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolymers of this invention are over 99 wt % PET and contain less than 50 ppb of extractable components.Type: ApplicationFiled: October 25, 2001Publication date: December 5, 2002Inventors: James M. Tibbitt, George E. Rotter, David P. Sinclair, Gary T. Brooks, Raymond T. Behrends
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Publication number: 20020155236Abstract: Multilayered plastic bottles are disclosed having oxygen scavenging capacity sufficient to maintain substantially zero or near zero (depending on product requirements) presence of oxygen in the bottle cavity for the planned shelf life of the bottled product under specified storage conditions. The bottles feature a layer comprised of oxygen scavenger copolyester and may be used for bottling beer and other products requiring nearly total absence of oxygen for the duration of the target product shelf life.Type: ApplicationFiled: March 28, 2002Publication date: October 24, 2002Inventors: Paul J. Cahill, George E. Rotter, Stephen Y. Chen
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Patent number: 6406766Abstract: Improved active oxygen scavenging packaging articles optionally further comprising SiO2 and/or EAA coatings are disclosed. Also improved active oxygen scavenging copolycondensates and their use in packaging articles are disclosed. Specifically disclosed are (1) the use of an oxidation moderator or controller (anti-oxidant) along with the copolycondensate scavenger and (2) post polymerization treatment of the copolycondensate substantially in the absence of oxygen. The improvements lead to increased oxygen consumption by the active oxygen scavenger and improved packaging characteristics for the active oxygen scavenging copolycondensates.Type: GrantFiled: December 22, 1998Date of Patent: June 18, 2002Assignee: BP Corporation North America Inc.Inventors: George E. Rotter, Paul J. Cahill, Tamila J. Barnes, Charles W. Bauer, David C. Johnson, Matthew A. Kulzick, Tsuei-Yun Lynch, Walter M. Nyderek
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Patent number: 6365247Abstract: Multilayered plastic bottles are disclosed having oxygen scavenging capacity sufficient to maintain substantially zero or near zero (depending on product requirements) presence of oxygen in the bottle cavity for the planned shelf life of the bottled product under specified storage conditions. The bottles feature a layer comprised of oxygen scavenger copolyester and may be used for bottling beer and other products requiring nearly total absence of oxygen for the duration of the target product shelf life.Type: GrantFiled: March 2, 1999Date of Patent: April 2, 2002Assignee: BP Corporation North America Inc.Inventors: Paul J. Cahill, Donald F. Ackerley, Roman F. Barski, Weilong Chiang Chiang, David C. Johnson, Walter M. Nyderek, George E. Rotter, Stephen Y. Chen
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Patent number: 6346308Abstract: Active oxygen scavenging compositions and their use in packaging articles are disclosed. The compositions are all plastic materials and are typically deployed as at least one layer in a multi-layered wall of a packaging article such as a bottle, can or film. The compositions are usually used in conjunction with added transition metal catalyst to enhance the uptake of oxygen. Use of the compositions and package constructions disclosed serves to lengthen the shelf life of packaged oxygen sensitive substances and/or diminish the need for refrigeration of the packages.Type: GrantFiled: February 11, 2000Date of Patent: February 12, 2002Assignee: BP Corporation North America Inc.Inventors: Paul J. Cahill, Joel A. Richardson, George E. Rotter, Granville L. Smyser, Roman F. Barski, Jr., Raymond V. Wass, Walter M. Nyderek
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Patent number: 5556926Abstract: Concentrates produced by melt processing a branching agent and a polyester carrier are disclosed. The concentrates are useful in melt processing polyesters. The concentrates contain sufficiently high concentrations of a branching agent to minimize the formation of crosslinked compounds in the concentrates. Process for using the concentrate also are disclosed.Type: GrantFiled: January 30, 1996Date of Patent: September 17, 1996Assignee: Amoco CorporationInventors: George E. Rotter, Weilong Chiang, Boh C. Tsai, John L. Melquist, Cheryl A. Pauer, Stephen Y. Chen
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Patent number: 5536793Abstract: Concentrates produced by melt processing a branching agent and a polyester carrier are disclosed. The concentrates are useful in melt processing polyesters. The concentrates contain sufficiently high concentrations of a branching agent to minimize the formation of crosslinked compounds in the concentrates. Process for using the concentrate also are disclosed.Type: GrantFiled: June 7, 1995Date of Patent: July 16, 1996Assignee: Amoco CorporationInventors: George E. Rotter, Weilong Chiang, Boh C. Tsai, John L. Melquist, Cheryl A. Pauer, Stephen Y. Chen
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Patent number: 5446111Abstract: Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.Type: GrantFiled: May 12, 1994Date of Patent: August 29, 1995Assignee: Amoco CorporationInventors: George E. Rotter, John L. Melquist, Weilong Chiang, Boh C. Tsai, John J. Kelly
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Patent number: 5340846Abstract: Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.Type: GrantFiled: December 17, 1993Date of Patent: August 23, 1994Assignee: Amoco CorporationInventors: George E. Rotter, John L. Melquist, Weilong Chiang, Boh C. Tsai, John J. Kelly
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Patent number: 5288764Abstract: Disclosed is a process for obtaining polyester articles, including foamed articles, containing low levels of extractable branching agent. The process comprises: (1) forming a molten mixture comprising (i) a major amount of a first resin composition comprising polyester and from 0 up to about 1 wt. % of a compound capable of branching the polyester, and (ii) a minor amount of a second polyester resin composition comprising at least about 50 wt. % polyester resin and greater than about 2 wt. % of a compound capable of branching the polyester, wherein the relative amounts of (i) and (ii) are such that said molten mixture comprises from about 0.1 wt. % to about 1 wt. % of said branching compound; (2) adding a blowing agent to the molten mixture; and (3) extruding the resultant mixture to obtain a foam. The invention is also directed to the second composition used in the above process, and foamed polyester articles obtained from the process.Type: GrantFiled: January 29, 1993Date of Patent: February 22, 1994Assignee: Amoco CorporationInventors: George E. Rotter, John L. Melquist, Weilong Chiang, Boh C. Tsai, John J. Kelly