Patents by Inventor James Lunt
James Lunt 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: 8604123Abstract: Described herein are biodegradable compositions, methods for making these compositions, and applications using these compositions. In one embodiment, a process of manufacturing paper or other products is provided using a composition comprising a mixture of calcium carbonate along with a biodegradable biopolymer matrix made from renewable resources including polylactic acid (“PLA”), aliphatic polyesters, and/or aliphatic aromatic polyesters and other additives.Type: GrantFiled: July 12, 2012Date of Patent: December 10, 2013Assignee: C-Stone LLCInventors: Paul Weismann, Sandee Whiteman, James Lunt
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Publication number: 20080230954Abstract: An injection stretch blow molding process for making containers from a polylactic acid resin. In one aspect the process comprises molding the polylactic acid resin into a perform, applying heat to the perform, stretching and blowing the perform in axial and radial dimensions in order to form a preliminary molded container, conditioning the molded container pursuant to a first conditioning method, conditioning the molded container pursuant to a second conditioning method, and stretching and blowing the molded container in order to form a final molded container. Relatively rigid bottles constructed in accordance with one or more processes disclosed herein are also contemplated.Type: ApplicationFiled: March 18, 2008Publication date: September 25, 2008Applicant: GREEN HARVEST TECHNOLOGIES, LLCInventors: Pat Gruber, Greg Roda, James Lunt
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Patent number: 6495631Abstract: The invention is directed toward melt-processable lactide polymer compositions, processes for manufacturing these compositions, and articles made from these compositions. The compositions include a first phase, which contains a polylactide-based polymer, and a second phase which includes elastomer. The elastomer is present in an amount sufficient to provide a polymer composition having an impact resistance of at least about 0.7 ft-lb/in. after the melt-processable polymer composition has been injection molded into bars and tested according to ASTM D256 (1993) method C. Preferably, the compositions also include a reactive compatibilizing agent. Methods of making these compositions and articles made from these compositions are also disclosed.Type: GrantFiled: April 12, 1999Date of Patent: December 17, 2002Assignee: Cargill, IncorporatedInventors: Jed Richard Randall, Christopher Michael Ryan, James Lunt, Mark Henry Hartman, Eric Stanley Hall, Jeffrey John Kolstad, David Roy Witzke
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Patent number: 6312823Abstract: A compostable multilayer film includes a core layer having a first surface and a second surface, a first blocking reducing layer covering the first surface of the core layer, and a second blocking reducing layer covering the second surface of the core layer. The core layer comprises a lactic acid residue-containing polymer having a glass transition temperature (Tg) below 20° C. At least one of the first and second blocking reducing layers comprise a semicrystalline aliphatic polyester. The core layer may be peroxide modified polylactide polymer which exhibits bridging between polylactide polymer chains.Type: GrantFiled: September 29, 1998Date of Patent: November 6, 2001Assignee: Cargrill, IncorporatedInventors: Ali Zakareya El-Afandi, Patrick Richard Gruber, Jeffrey John Kolstad, James Lunt, Christopher M. Ryan, James Zakareya Nangeroni, Nancy Uzelac Buehler, Mark Hartmann, Jed Richard Randall, Andrea Lee Brosch
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Patent number: 5922832Abstract: The invention is directed toward melt-processable lactide polymer compositions, processes for manufacturing these compositions, and articles made from these compositions. The compositions include a first phase, which contains a polylactide-based polymer, and a second phase which includes elastomer. The elastomer is present in an amount sufficient to provide a polymer composition having an impact resistance of at least about 0.7 ft-lb/in. after the melt-processable polymer composition has been injection molded into bars and tested according to ASTM D256 (1993) method C. Preferably, the compositions also include a reactive compatibilizing agent. Methods of making these compositions and articles made from these compositions are also disclosed.Type: GrantFiled: October 27, 1997Date of Patent: July 13, 1999Assignee: Cargill, IncorporatedInventors: Jed Richard Randall, Christopher Michael Ryan, James Lunt, Mark Henry Hartman, Eric Stanley Hall, Jeffrey John Kolstad, David Roy Witzke
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Patent number: 5849374Abstract: A compostable multilayer structure in the form of a film, sheet, laminate, and the like, which comprises a core layer having a first surface and a second surface, a first blocking reducing layer covering the first surface of the core layer, and a second blocking reducing layer covering the second surface of the core layer. The core layer contains a lactic acid residue-containing polymer and has a glass transition temperature (T.sub.g) below about 20.degree. C. The first and second blocking reducing layers include a polymer composition of a hydrolyzable polymer and have a T.sub.g above about 50.degree. C. The multilayer structure can be used for preparing bags and wrappers.Type: GrantFiled: September 28, 1995Date of Patent: December 15, 1998Assignee: Cargill, IncorporatedInventors: Patrick R. Gruber, Jeffrey John Kolstad, James Lunt, Christopher M. Ryan, Ali Zakareya El-Afandi, James Nangeroni, Nancy Uzelac Buehler, Mark Hartmann, Jed Richard Randall, Andrea Lee Brosch
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Patent number: 5849401Abstract: A compostable multilayer film includes a core layer having a first surface and a second surface, a first blocking reducing layer covering the first surface of the core layer, and a second blocking reducing core layer comprises a lactic acid residue-containing polymer having a glass transition temperature (Tg) below 20.degree. C. The first and second blocking reducing layers comprise a semicrystalline aliphatic polyester. The hydrolyzable polymer and have a T.sub.g above about 50.degree. C. The multilayer structure can be used for preparing bags and wrappers.Type: GrantFiled: May 3, 1996Date of Patent: December 15, 1998Assignee: Cargill, IncorporatedInventors: Ali Zakareya El-Afandi, Patrick Richard Gruber, Jeffrey John Kolstad, James Lunt, Christopher M. Ryan, James Zakareya Nangeroni, Nancy Uzelac Buehler, Mark Hartmann, Jed Richard Randall, Andrea Lee Brosch
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Patent number: 5714573Abstract: The invention is directed toward melt-processable lactide polymer compositions, processes for manufacturing these compositions, and articles made from these compositions. The compositions include a first phase, which contains a polylactide-based polymer, and a second phase which includes elastomer. The elastomer is present in an amount sufficient to provide a polymer composition having an impact resistance of at least about 0.7 ft-lb/in. after the melt-processable polymer composition has been injection molded into bars and tested according to ASTM D256 (1993) method C. Preferably, the compositions also include a reactive compatibilizing agent. Methods of making these compositions and articles made from these compositions are also disclosed.Type: GrantFiled: January 19, 1995Date of Patent: February 3, 1998Assignee: Cargill, IncorporatedInventors: Jed Richard Randall, Christopher Michael Ryan, James Lunt, Mark Henry Hartmann
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Patent number: 5336719Abstract: Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These clear polymers are useful in a number of application, particularly for those applications requiring quite high toughness and transparency such as packaging, containers or protective covering.Type: GrantFiled: April 26, 1993Date of Patent: August 9, 1994Assignee: Polysar LimitedInventors: Ronald J. Thompson, James Lunt, John C. Lamont, John C. Kwok
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Patent number: 5252664Abstract: Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These clear polymers are useful in a number of applications, particularly for those applications requiring quite high toughness and transparency such as packaging, containers or protective covering.Type: GrantFiled: June 27, 1991Date of Patent: October 12, 1993Assignee: Polysar LimitedInventors: Ronald J. Thompson, James Lunt, John C. Lamont, John C. Kwok
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Patent number: 5079296Abstract: Tough transparent thermoplastics blends may be prepared by blending 10 to 99 weight percent of a block copolymer; 0.1 to 1 weight percent of particulate rubber having a particle size from 0.1 to 10 microns; and the balance a clear glassy polymer. These clear polymers are useful in a number of applications, particularly for those applications requiring quite high toughness and transparency such as packaging, containers or protective covering.Type: GrantFiled: July 21, 1989Date of Patent: January 7, 1992Assignee: Polysar LimitedInventors: Ronald J. Thompson, James Lunt, John C. Lamont, John C. Kwok
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Patent number: 5043392Abstract: Functionalized thermoplastics such as styrene-maleic anhydride copolymers polystyrene or maleated polyolefins may be thoughened with halogenated rubbers which are copolymers of isoprene and isobutylene provided a dialkyl or dihydroxyalkyl amino alkanol is present as a compatibilizer. The toughened thermoplastics have about a two fold increase in IZOD impact resistance.Type: GrantFiled: January 22, 1990Date of Patent: August 27, 1991Assignee: Polysar LimitedInventors: James Lunt, Susan A. M. May, Patricia A. Leivo
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Patent number: 4945077Abstract: The invention relates to the preparation of closed cell phenolic resin foams produced from compositions of phenol-aldehyde resole resins, and the foam products thus prepared. More particularly the present invention relates to the preparation of phenolic resin foams by a method employing a novel modified phenolic foam catalyst. The invention also relates to these modified phenolic foam catalysts which include an aromatic sulphonic acid and resorcinol.Type: GrantFiled: September 18, 1989Date of Patent: July 31, 1990Assignee: Fiberglass Canada Inc.Inventors: Paul J. Meunier, James Lunt, Edwin J. MacPherson
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Patent number: 4921910Abstract: Functionalized thermoplastics such as styrene-maleic anhydride copolymers or maleated polyolefins may be toughened with halogenated rubbers which are copolymers of isoprene and isobutylene provided a dialkyl or dihydroxyalkyl amino alkanol is present as a compatibilizer. The toughened thermoplastics have about a two fold increase in IZOD impact resistance.Type: GrantFiled: April 19, 1989Date of Patent: May 1, 1990Assignee: Polysar LimitedInventors: James Lunt, Susan A. M. May, Patricia A. Leivo
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Patent number: 4883824Abstract: The invention relates to the preparation of closed cell phenolic resin foams produced from compositions of phenol-aldehyde resole resins, and the foam products thus prepared. More particularly the present invention relates to the preparation of phenolic resin foams by a method employing a novel modified phenolic foam catalyst. The invention also relates to these modified phenolic foam catalysts which include an aromatic sulphonic acid and resorcinol.Type: GrantFiled: February 9, 1989Date of Patent: November 28, 1989Assignee: Fiberglas Canada, Inc.Inventors: Paul J. Meunier, James Lunt, Edwin J. MacPherson
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Patent number: 4576972Abstract: This invention relates to the manufacture of foam from phenolic resins and to the foam so produced. In order to overcome some of the limitations of the prior art closed cell phenolic foams, we have developed a method of preparing closed cell foams from modified, low cost phenol formaldehyde resoles, which exhibit high closed cell contents, low friability and low thermal conductivity. This specification provides a foam competitive with urethane foams, which have an aged thermal conductivity of about 0.16K. or less, but which will not generate fumes as toxic as those of urethane. There is, provided a method of making a phenolic foam material comprising the steps of(1) preparing a base catalyzed phenol-formaldehyde resole having a mole ratio of phenol to formaldehyde of between 1:3 and 1:4.Type: GrantFiled: July 29, 1985Date of Patent: March 18, 1986Assignee: Fiberglas Canada, Inc.Inventors: James Lunt, Edwin J. MacPherson, Paul J. Meunier
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Patent number: 4546119Abstract: This invention relates to the manufacture of foam from phenolic resins and to the foam so produced. In order to overcome some the the limitations of the prior art closed cell phenolic foams, we have developed a method of preparing closed cell foams from modified, low cost phenol formaldehyde resoles, which exhibit high closed cell contents, low friability and low thermal conductivity. This specification provides a foam competitive with urethane foams, which have an aged thermal conductivity of about 0.16K. or less, but which will not generate fumes as toxic as those of urethane. There is, provided a method of making a phenolic foam material comprising the steps of(1) preparing a base catalyzed phenol-formaldehyde resole having a mole ratio of phenol to formaldehyde of between 1:3 and 1:4.Type: GrantFiled: November 29, 1984Date of Patent: October 8, 1985Assignee: Fiberglas Canada, Inc.Inventors: James Lunt, Edwin J. MacPherson, Paul J. Meunier