Patents by Inventor Glenn C. Castner
Glenn C. Castner 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: 9453090Abstract: Process for producing a thermoplastic polymer foam article includes preparing an expandable polymeric formulation comprising a thermoplastic polymer and a blowing agent blend, forming the formulation into an expandable bead, and expanding the expandable bead to form a thermoplastic polymer foam article. The blowing agent blend includes methyl formate, hydrocarbon, and either carbon dioxide or 1,1,1,2-tetrafluoroethane (HFC-134a). The blowing agent blend has a higher effective volatility than that of methyl formate alone. A thermoplastic polymer foam article prepared by a process is also provided.Type: GrantFiled: March 4, 2014Date of Patent: September 27, 2016Assignee: THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORKInventors: Y. Paul Handa, Gary A. Francis, Glenn C. Castner, Mohammad Zafar
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Publication number: 20140187658Abstract: Process for producing a thermoplastic polymer foam article includes preparing an expandable polymeric formulation comprising a thermoplastic polymer and a blowing agent blend, forming the formulation into an expandable bead, and expanding the expandable bead to form a thermoplastic polymer foam article. The blowing agent blend includes methyl formate, hydrocarbon, and either carbon dioxide or 1,1,1,2-tetrafluoroethane (HFC-134a). The blowing agent blend has a higher effective volatility than that of methyl formate alone. A thermoplastic polymer foam article prepared by a process is also provided.Type: ApplicationFiled: March 4, 2014Publication date: July 3, 2014Applicant: Pactiv LLCInventors: Y. Paul Handa, Gary A. Francis, Glenn C. Castner, Mohammad Zafar
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Patent number: 8703835Abstract: A blowing agent blend for making thermoplastic polymer foams includes methyl formate. The blowing agent blend can further comprise at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon with polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam can be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend includes methyl formate and one or more co-blowing agents. The methyl formate-based blowing agent blends produce dimensionally stable foams that have improved resistance to flame spread. A process for the preparation of such foams is also provided.Type: GrantFiled: September 14, 2012Date of Patent: April 22, 2014Assignee: Pactiv LLCInventors: Y. Paul Handa, Gary A. Francis, Glenn C. Castner, Mohammad Zafar
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Patent number: 8598244Abstract: A blowing agent blend for making thermoplastic polymer foams includes methyl formate. The blowing agent blend can further comprise at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon with polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam can be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend includes methyl formate and one or more co-blowing agents. The methyl formate-based blowing agent blends produce dimensionally stable foams that have improved resistance to flame spread. A process for the preparation of such foams is also provided.Type: GrantFiled: September 14, 2012Date of Patent: December 3, 2013Assignee: Pactiv LLCInventors: Y. Paul Handa, Gary A. Francis, Glenn C. Castner, Mohammad Zafar
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Publication number: 20130011648Abstract: A blowing agent blend for making thermoplastic polymer foams includes methyl formate. The blowing agent blend can further comprise at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon with polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam can be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend includes methyl formate and one or more co-blowing agents. The methyl formate-based blowing agent blends produce dimensionally stable foams that have improved resistance to flame spread. A process for the preparation of such foams is also provided.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Y. Paul Handa, Gary A. Francis, Glenn C. Castner, Mohammad Zafar
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Publication number: 20130011647Abstract: A blowing agent blend for making thermoplastic polymer foams includes methyl formate. The blowing agent blend can further comprise at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon with polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam can be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend includes methyl formate and one or more co-blowing agents. The methyl formate-based blowing agent blends produce dimensionally stable foams that have improved resistance to flame spread. A process for the preparation of such foams is also provided.Type: ApplicationFiled: September 14, 2012Publication date: January 10, 2013Inventors: Y. Paul Handa, Gary A. Francis, Glenn C. Castner, Mohammad Zafar
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Patent number: 8309619Abstract: A blowing agent blend for making thermoplastic polymer foams includes methyl formate. The blowing agent blend can further comprise at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon with polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam can be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend includes methyl formate and one or more co-blowing agents. The methyl formate-based blowing agent blends produce dimensionally stable foams that have improved resistance to flame spread. A process for the preparation of such foams is also provided.Type: GrantFiled: February 28, 2007Date of Patent: November 13, 2012Assignee: Pactiv LLCInventors: Y. Paul Handa, Gary A. Francis, Glenn C. Castner, Mohammad Zafar
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Patent number: 7312253Abstract: A blowing agent blend for making thermoplastic polymer foams comprises methyl formate. The blowing agent blend can further comprise at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent (e.g. an inorganic agent, a hydrocarbon, a halogenated hydrocarbon, a hydrocarbon with polar, functional group(s), water or any combination thereof), or a chemical co-blowing agent, or combinations thereof. The thermoplastic polymer foam can be an alkenyl aromatic polymer foam, e.g. a polystyrene foam. The blowing agent blend can comprise any combination of methyl formate and one or more co-blowing agents. The methyl formate-based blowing agent blends produce stable foams for various applications, including containers, packaging systems, as well as insulation boards and building materials. A process for the preparation of such foams is also provided.Type: GrantFiled: December 17, 2004Date of Patent: December 25, 2007Assignee: Pactiv CorporationInventors: Yash Paul Handa, Joseph A. Brackman, Glenn C. Castner, Mohammad Zafar
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Patent number: 6132781Abstract: A modified atmosphere package includes first and second compartments separated by a partition member that is substantially permeable to oxygen. The first compartment contains an oxygen scavenger activated with an oxygen scavenger accelerator. The second compartment contains a retail cut of raw meat. Various techniques are employed to rapidly reduce the oxygen level in the second compartment below pigment sensitive levels so that the growth of metmyoglobin is inhibited. Some of these techniques increase the flow of oxygen from the second compartment to the first compartment through the partition member, while other techniques directly absorb oxygen within the second compartment by locating a second oxygen scavenger within the second compartment.Type: GrantFiled: December 17, 1999Date of Patent: October 17, 2000Assignee: Pactiv CorporationInventors: Daniel G. Carr, Glenn C. Castner, Gary R. DelDuca, Rollie H. DeMay, Alan E. Deyo, Stephen L. Goulette, Darryl P. Hansen, Vinod K. Luthra, Allen J. Norby, Robert A. Sloan, Jill F. Thompson
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Patent number: 6054153Abstract: A modified atmosphere package includes first and second compartments separated by a partition member that is substantially permeable to oxygen. The first compartment contains an oxygen scavenger activated with an oxygen scavenger accelerator. The second compartment contains a retail cut of raw meat. Various techniques are employed to rapidly reduce the oxygen level in the second compartment below pigment sensitive levels so that the growth of metmyoglobin is inhibited. Some of these techniques increase the flow of oxygen from the second compartment to the first compartment through the partition member to a level inhibiting the formation of metmyoglobin in the raw meat.Type: GrantFiled: April 3, 1998Date of Patent: April 25, 2000Assignee: Tenneco Packaging Inc.Inventors: Daniel G. Carr, Glenn C. Castner, Gary R. DelDuca, Rollie H. DeMay, Alan E. Deyo, Stephen L. Goulette, Darryl P. Hansen, Vinod K. Luthra, Allen J. Norby, Robert A. Sloan, Jill F. Thompson
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Patent number: 5693388Abstract: The invention relates to a mold apparatus and a process for forming a lid latching mechanism in a thermoplastic container. The lid latching mechanism features a large, trapezoidally-shaped opening hole. The trapezoidal shape has been found to reduce the amount of tearing that can occur along the edges of an opening formed during the thermoforming process. The opening is created by the engagement between a fixed shear key mounted in a first mold member and a movable shear key which has a trapezoidally-shaped cutting surface and is mounted in a second mold member. The movable key travels along an inclined path as the mold members close on a preheated thermoplastic sheet to form a container.Type: GrantFiled: June 7, 1995Date of Patent: December 2, 1997Assignee: Tenneco Packaging Inc.Inventors: Glenn C. Castner, Keith A. Messinger, Donald E. Rowe
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Patent number: 5595769Abstract: The invention relates to a mold apparatus and a process for forming a lid latching mechanism in a thermoplastic container. The lid latching mechanism features a large, trapezoidally-shaped opening hole. The trapezoidal shape has been found to reduce the amount of tearing that can occur along the edges of an opening formed during the thermoforming process. The opening is created by the engagement between a fixed shear key mounted in a first mold member and a movable shear key which has a trapezoidally-shaped cutting surface and is mounted in a second mold member. The movable key travels along an inclined path as the mold members close on a preheated thermoplastic sheet to form a container.Type: GrantFiled: June 7, 1995Date of Patent: January 21, 1997Assignee: Tenneco PackagingInventors: Glenn C. Castner, Keith A. Messinger, Donald E. Rowe
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Patent number: 5474728Abstract: The invention relates to a mold apparatus and a process for forming a lid latching mechanism in a thermoplastic container. The lid latching mechanism features a large, trapezoidally-shaped opening hole. The trapezoidal shape has been found to reduce the amount of tearing that can occur along the edges of an opening formed during the thermoforming process. The opening is created by the engagement between a fixed shear key mounted in a first mold member and a movable shear key which has a trapezoidally-shaped cutting surface and is mounted in a second mold member. The movable key travels along an inclined path as the mold members close on a preheated thermoplastic sheet to form a container.Type: GrantFiled: July 11, 1994Date of Patent: December 12, 1995Assignee: Mobil Oil CorporationInventors: Glenn C. Castner, Keith A. Messinger, Donald E. Rowe
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Patent number: D353327Type: GrantFiled: August 27, 1993Date of Patent: December 13, 1994Assignee: Mobil Oil CorporationInventors: Glenn C. Castner, Donald E. Rowe