Patents by Inventor Paul J. Cahill
Paul J. Cahill 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: 20040241418Abstract: Formulation of recycled polyethylene terephthalate (PET) with pulverized recycled rubber-like material, and optimally a compatibilizing agent is described for application to railroad tie construction and other products. Desirably, the attractive formulation provides useful products from recycling of plastic PET bottles and discarded tires which greatly benefits the environment. The formulation can be foamed during an extrusion process to reduce the density of the composite so as to be even more economically attractive. Optional use of branching-chain extension agents and/or hydrolytic stabilization additives can also be used in the formulation for further benefits.Type: ApplicationFiled: August 1, 2003Publication date: December 2, 2004Inventor: Paul J. Cahill
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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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Patent number: 6509436Abstract: Compositions for scavenging oxygen are disclosed. These compositions comprise condensation copolymers comprising predominantly polyester segments and an oxygen scavenging amount of polyolefin oligomer segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. The copolymers are preferably formed by transesterification during reactive extrusion and typically comprise about 0.5 to about 12 wt % of polyolefin oligomer segments. The copolycondensates are capable of absorbing at least 0.4 cc of oxygen per gram of copolymer in the solid state at ambient temperatures and are typically used as layers in films, liners, cups, wraps, bottles, etc. Use of these oxygen scavenging compositions in bottles provides a clear and rigid bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolycondensates of this invention are over 99.Type: GrantFiled: June 29, 2000Date of Patent: January 21, 2003Assignee: BP Corporation North America Inc.Inventors: Paul J. Cahill, Stephen Y. Chen
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Patent number: 6506463Abstract: Compositions for scavenging oxygen are disclosed. These compositions comprise copolyamides comprising over 50 weight percent polyamide segments and an active oxygen scavenging amount of polyolefin oligomer segments. The polyamide segments comprise segments derived from typical bottling and packaging polyamides such as polyhexamethyleneadipamide and polyphthalamides. The copolymers are preferably formed by transesterification during reactive extrusion and typically comprise about 0.5 to about 12 wt. % of polyolefin oligomer segments. The copolyamides provide enhanced active and passive oxygen barrier properties over similar polyester constructions and similar polyamide constructions, when used in a laminar construction. In a series of preferred embodiments, multi-layered bottles fabricated with the oxygen scavenging copolyatnides of this invention are about 99.8 wt. % polyamide and suitable for recycle with other polyamide bottles.Type: GrantFiled: February 11, 2000Date of Patent: January 14, 2003Assignee: BP Corporation North America Inc.Inventors: Paul J. Cahill, Joel Albert Richardson, Raymond V. Wass
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Publication number: 20020177663Abstract: Formulation of recycled polyethylene terephthalate (PET) with pulverized recycled rubber-like material, and optimally a compatibilizing agent is described for application to railroad tie construction and other products. Desirably, the attractive formulation provides useful products from recycling of plastic PET bottles and discarded tires which greatly benefits the environment. The formulation can be foamed during an extrusion process to reduce the density of the composite so as to be even more economically attractive. Optional use of branching-chain extension agents and/or hydrolytic stabilization additives can also be used in the formulation for further benefits.Type: ApplicationFiled: March 16, 2001Publication date: November 28, 2002Inventor: Paul J. Cahill
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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: 6083585Abstract: Compositions for scavenging oxygen are disclosed. These compositions comprise condensation copolymers comprising predominantly polyester segments and an oxygen scavenging amount of polyolefin oligomer segments. The polyester segments comprise segments derived from typical bottling and packaging polyesters such as PET and PEN. The copolymers are preferably formed by transesterification during reactive extrusion and typically comprise about 0.5 to about 12 wt % of polyolefin oligomer segments. The copolycondensates are capable of absorbing at least 0.4 cc of oxygen per gram of copolymer in the solid state at ambient temperatures and are typically used as layers in films, liners, cups, wraps, bottles, etc. Use of these oxygen scavenging compositions in bottles provides a clear and rigid bottle similar in appearance to unmodified polyester bottles. In a series of preferred embodiments, bottles fabricated with the oxygen scavenging copolycondensates of this invention are over 99.Type: GrantFiled: September 23, 1996Date of Patent: July 4, 2000Assignee: BP Amoco CorporationInventors: Paul J. Cahill, Stephen Y. Chen
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Patent number: 5504830Abstract: An optical glass fiber coated with a protective layer of photocurable polyimide coating which can be prepared from the polymeric condensation product of 6FDA, DMDE, and a photosensitizing moiety. More particularly, the present invention relates to a photocurable polyimide coated glass fiber useful for optic applications.Type: GrantFiled: April 11, 1995Date of Patent: April 2, 1996Assignee: Amoco CorporationInventors: David D. Ngo, Paul J. Cahill, John J. Greczek
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Patent number: 5427862Abstract: An optical glass fiber coated with a protective layer of photocurable polyimide coating which can be prepared from the polymeric condensation product of 6FDA, DMDE, and a photosensitizing moiety. More particularly, the present invention relates to a photocurable polyimide coated glass fiber useful for optic applications.Type: GrantFiled: September 30, 1991Date of Patent: June 27, 1995Assignee: Amoco CorporationInventors: David D. Ngo, Paul J. Cahill, John J. Greczek
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Patent number: 4647293Abstract: An unleaded gasoline in combination with a minor amount of gasoline soluble molybdenum(VI) compound is effective in reducing elevated steady state octane requirement and suppressing octane requirement increase in spark ignition internal combustion engines.Type: GrantFiled: February 24, 1986Date of Patent: March 3, 1987Assignees: William H. Magidson, Standard Oil Company (Indiana)Inventors: Paul J. Cahill, Larry C. Satek
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Patent number: 4425249Abstract: A Mannich condensation reaction of an alkyl phenol, a formaldehyde-yielding reagent, an amine, and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine.Type: GrantFiled: June 28, 1979Date of Patent: January 10, 1984Assignee: Standard Oil Company (Indiana)Inventors: Paul J. Cahill, Edmund J. Piasek, deceased, by Evelyn W. Hunt, administrator
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Patent number: 4425245Abstract: A Mannich condensation reaction of an alkyl phenol, a formaldehyde-yielding reagent, an amine, and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine.Type: GrantFiled: September 11, 1981Date of Patent: January 10, 1984Assignee: Standard Oil Company (Indiana)Inventors: Paul J. Cahill, Edmund J. Piasek, deceased, by Evelyn W. Hunt, administratrix
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Patent number: 4398505Abstract: N,N-disubstituted organic nitroxides are highly effective ignition improvers for diesel fuels.Type: GrantFiled: October 22, 1981Date of Patent: August 16, 1983Assignee: Standard Oil Company (Indiana)Inventor: Paul J. Cahill
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Patent number: 4238628Abstract: Process for the production of undegraded alkylated aromatic compounds by alkylating an aromatic compound with a C.sub.3 or higher olefin polymer having terminal ethylene units.Type: GrantFiled: September 28, 1978Date of Patent: December 9, 1980Assignee: Standard Oil Company (Indiana)Inventors: Paul J. Cahill, Carl E. Johnson
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Patent number: 4202784Abstract: Mannich additives formed from a tertiary carbinamine, a substantially hydrocarbon compound having at least one acidic or active hydrogen, a polyamine and a formaldehyde-yielding reagent.Type: GrantFiled: April 9, 1979Date of Patent: May 13, 1980Assignee: Standard Oil Company (Indiana)Inventors: Paul J. Cahill, John H. Udelhofen