Patents by Inventor John Collins Dyer
John Collins Dyer 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: 6160028Abstract: Disclosed are microporous, open-celled polymeric foams formed by polymerizing a high internal phase water-in-oil emulsion comprising a continuous oil phase and discontinuous water phase where the foam has a Limiting Oxygen Index (LOI) value of at least about 18% Such foams are commonly known in the art as "HIPEs". The foams have a variety of flame retardant applications, including use in insulation.Type: GrantFiled: July 17, 1998Date of Patent: December 12, 2000Assignee: The Procter & Gamble CompanyInventor: John Collins Dyer
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Patent number: 6136874Abstract: Disclosed are polymeric foam materials obtained using monomers based on silicon and/or germination. The copolymerization of silicon- or germanium-based monomers provide foams that have low glass transition temperatures and low densities. These foams also exhibit relatively high yield stress values, which make the foams suitable for absorption of fluids, particularly aqueous fluids such as urine and menses (when the foams are rendered hydrophilic). The foams have a variety of other uses, including insulation applications.Type: GrantFiled: June 30, 1999Date of Patent: October 24, 2000Assignee: The Procter & Gamble CompanyInventors: John Collins Dyer, Herbert Louis Retzsch
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Patent number: 6013589Abstract: Disclosed are materials capable of distributing and releasing aqueous fluids, e.g., urine, to a storage material, and absorbent articles comprising such fluid distribution materials. These fluid distribution materials have A) a ratio of capillary desorption height (i.e., height at 50% capacity) to capillary absorption height (i.e., height at 50% capacity) of not more than about 1.8:1; B) a capillary desorption height of not more than about 50 cm; C) the ability to wick synthetic urine at 31.degree. C. to a height of 15 cm in not more than about 25 minutes; and D) a vertical wicking capacity at 15 cm of at least about 6 g/g.Type: GrantFiled: March 13, 1998Date of Patent: January 11, 2000Assignee: The Procter & Gamble CompanyInventors: Thomas Allen DesMarais, John Collins Dyer, Gianfranco Palumbo, Bruno Johannes Ehrnsperger
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Patent number: 5922780Abstract: Polymers are made from 1,3,7-octatriene or like conjugated polyenes and a crosslinking agent having at least 2 activated double bonds such as ethylene glycol dimethacrylate. These polymers can be used to make absorbent foams that are useful in absorbent articles such as diapers, as well as latexes that are useful as binders and adhesives.Type: GrantFiled: January 10, 1995Date of Patent: July 13, 1999Assignee: The Procter & Gamble CompanyInventors: John Collins Dyer, Bryn Hird, Pui Kwan Wong, Sharon Marie Beshouri
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Patent number: 5899893Abstract: Foams capable of absorbing blood and blood-based fluids, especially menses. These absorbent foams have high capillary absorption pressures required of absorbents used in catamenial products, yet have sufficient openness to allow free movement of the insoluble components in blood-based fluids such as menses. These absorbent foams are made by polymerizing high internal phase emulsions (HIPEs) where the volume to weight ratio of the water phase to the oil phase is in the range of from about 20:1 to about 125:1. These foams are particularly useful as absorbent members for catamenial pads.Type: GrantFiled: October 20, 1997Date of Patent: May 4, 1999Assignee: The Procter & Gamble CompanyInventors: John Collins Dyer, Susan Nicole Lloyd
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Patent number: 5873869Abstract: Absorbent articles such as sanitary napkins, panty liners, adult incontinence devices, and the like are disclosed. The absorbent articles described herein comprise a foam absorbent structure comprising a hydrophilic, flexible, nonionic polymeric foam structure of interconnected open cells which is particularly suitable for absorbing blood and blood-based liquids. The foam structure is resiliently compressible and has resistance to compression deflection of from about 5% to about 85% when measured under a confining pressure of 0.74 psi at 31.degree. C. after 15 minutes. In preferred embodiments, the foam structure is compressible under such forces that when it is placed in the space between the wearer's labia majora, it will be compressed without deforming the wearer's labia majora, and will be molded by the wearer's labia and conform to the shape thereof.Type: GrantFiled: July 3, 1996Date of Patent: February 23, 1999Assignee: The Procter & Gamble CompanyInventors: John Lee Hammons, John Collins Dyer
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Patent number: 5869171Abstract: The present invention relates to a HIPE-derived heterogeneous polymeric foam structure of interconnected open-cells, wherein the foam structure has at least two distinct regions. Such heterogeneous foams have various applications, such as energy and fluid absorption, insulation, and filtration.The invention further relates to a heterogeneous absorbent polymeric foam that, upon contact with aqueous fluids (in particular body fluids such as urine and blood), can acquire, distribute, and store these fluids.The foams of the invention have at least two distinct regions having different density, polymer composition, surface properties, and/or microcellular morphology.The invention further relates to a process for obtaining the heterogeneous foams by polymerizing a high internal phase water-in-oil emulsion, or HIPE. In one aspect, the process utilizes at least two distinct HIPEs, with each emulsion having a relatively small amount of an oil phase and a relatively greater amount of a water phase.Type: GrantFiled: May 29, 1998Date of Patent: February 9, 1999Assignee: The Procter & Gamble CompanyInventors: Thomas Michael Shiveley, Thomas Allen DesMarais, John Collins Dyer, Keith Joseph Stone
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Patent number: 5863958Abstract: Polymers are made from 1,3,7-octatriene or like conjugated polyenes and a crosslinking agent having at least 2 activated double bonds such as ethylene glycol dimethacrylate. These polymers can be used to make absorbent foams that are useful in absorbent articles such as diapers, as well as latexes that are useful as binders and adhesives.Type: GrantFiled: September 19, 1997Date of Patent: January 26, 1999Assignee: The Procter & Gamble CompanyInventors: John Collins Dyer, Bryn Hird, Pui Kwan Wong, Sharon Marie Beshouri
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Patent number: 5856366Abstract: The present invention relates to a HIPE-derived heterogeneous polymeric foam structure of interconnected open-cells, wherein the foam structure has at least two distinct regions. Such heterogeneous foams have various applications, such as energy and fluid absorption, insulation, and filtration.The invention further relates to a heterogeneous absorbent polymeric foam that, upon contact with aqueous fluids (in particular body fluids such as urine and blood), can acquire, distribute, and store these fluids.The foams of the invention have at least two distinct regions having different density, polymer composition, surface properties, and/or microcellular morphology.The invention further relates to a process for obtaining the heterogeneous foams by polymerizing a high internal phase water-in-oil emulsion, or HIPE. In one aspect, the process utilizes at least two distinct HIPEs, with each emulsion having a relatively small amount of an oil phase and a relatively greater amount of a water phase.Type: GrantFiled: September 19, 1997Date of Patent: January 5, 1999Assignee: The Procter & Gamble CompanyInventors: Thomas Michael Shiveley, Thomas Allen DesMarais, John Collins Dyer, Keith Joseph Stone
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Patent number: 5849805Abstract: Foams capable of absorbing blood and blood-based fluids, especially menses. These absorbent foams have high capillary absorption pressures required of absorbents used in catamenial products, yet have sufficient openness to allow free movement of the insoluble components in blood-based fluids such as menses. These absorbent foams are made by polymerizing high internal phase emulsions (HIPEs) where the volume to weight ratio of the water phase to the oil phase is in the range of from about 20:1 to about 125:1. These foams are particularly useful as absorbent members for catamenial pads.Type: GrantFiled: October 13, 1995Date of Patent: December 15, 1998Assignee: The Procter & Gamble CompanyInventor: John Collins Dyer
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Patent number: 5817704Abstract: The present invention relates to a HIPE-derived heterogeneous polymeric foam structure of interconnected open-cells, wherein the foam structure has at least two distinct regions. Such heterogeneous foams have various applications, such as energy and fluid absorption, insulation, and filtration.The invention further relates to a heterogeneous absorbent polymeric foam that, upon contact with aqueous fluids (in particular body fluids such as urine and blood), can acquire, distribute, and store these fluids.The foams of the invention have at least two distinct regions having different density, polymer composition, surface properties, and/or microcellular morphology.The invention further relates to a process for obtaining the heterogeneous foams by polymerizing a high internal phase water-in-oil emulsion, or HIPE. In one aspect, the process utilizes at least two distinct HIPEs, with each emulsion having a relatively small amount of an oil phase and a relatively greater amount of a water phase.Type: GrantFiled: March 8, 1996Date of Patent: October 6, 1998Assignee: The Procter & Gamble CompanyInventors: Thomas Michael Shiveley, Thomas Allen DesMarais, John Collins Dyer, Keith Joseph Stone
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Patent number: 5795921Abstract: Foams capable of absorbing blood and blood-based fluids, especially menses. These absorbent foams have high capillary absorption pressures required of absorbents used in catamenial products, yet have sufficient openness to allow free movement of the insoluble components in blood-based fluids such as menses. These absorbent foams are made by polymerizing high internal phase emulsions (HIPEs) where the volume to weight ratio of the water phase to the oil phase is in the range of from about 20:1 to about 125:1. These foams are particularly useful as absorbent members for catamenial pads.Type: GrantFiled: July 30, 1996Date of Patent: August 18, 1998Assignee: The Procter & Gamble Co.Inventors: John Collins Dyer, Susan Nicole Lloyd
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Patent number: 5786395Abstract: Absorbent foams materials that are capable of acquiring and distributing aqueous fluids, especially discharged body fluids such as urine. These absorbent foams combine relatively high capillary absorption pressures and capacity-per-weight properties that allow them to acquire fluid, with or without the aid of gravity. These absorbent foams also give up this fluid efficiently to higher absorption pressure storage materials, including foam-based absorbent fluid storage components, without collapsing. These absorbent foams are made by polymerizing high internal phase emulsions (HIPEs).Type: GrantFiled: August 13, 1996Date of Patent: July 28, 1998Assignee: The Procter & Gamble CompanyInventors: Keith Joseph Stone, Thomas Allen DesMarais, John Collins Dyer, Bryn Hird, Gary Dean La Von, Stephen Allen Goldman, Michelle Renee Peace, Paul Seiden
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Patent number: 5770634Abstract: The present invention relates to compressable polymeric foam materials useful as insulation. These polymeric foams are prepared by polymerization of certain water-in-oil emulsions having a relatively high ratio of water phase to oil phase, commonly known as "HIPEs." The polymeric foam materials comprise a generally hydrophobic, flexible or semi-flexible, nonionic polymeric foam structure of interconnected open-cells. The foam structures have:(a) a specific surface area per foam volume of at least about 0.01 m.sup.2 /cc;(b) an expanded density of less than about 0.05 g/cc; and(c) a ratio of expanded to compressed thickness of at least about 3:1;wherein when the foam is compressed to 33% of its original expanded thickness and is thereafter maintained without artificial restraint on its surface, said foam will reexpand by no more than 50% after 21 days at ambient temperature (22.degree. C.).Type: GrantFiled: June 7, 1995Date of Patent: June 23, 1998Assignee: The Procter & Gamble CompanyInventors: John Collins Dyer, Thomas Allen DesMarais
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Patent number: 5767168Abstract: Biodegradable and/or compostable polymers are made from isoprene, 2,3-dimethyl-1,3-butadiene or like conjugated dienes and a crosslinking agent having a cleavable linking group such as ethylene glycol dimethacrylate. These polymers can be used to make absorbent foams that are useful in absorbent articles such as diapers, as well as other biodegradable articles such as films, and latexes useful as binders and adhesives.Type: GrantFiled: January 10, 1996Date of Patent: June 16, 1998Assignee: The Proctor & Gamble CompanyInventors: John Collins Dyer, Bryn Hird, Pui Kwan Wong
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Patent number: 5759569Abstract: Biodegradable articles such as diaper topsheets, diaper backsheets, garbage bags, tampon applicators, disposable syringes and the like that are made from trans-1,4-polyisoprene and like trans-polymers. These articles can also be made from blends of these trans-polymers with other biodegradable components such as starch.Type: GrantFiled: January 10, 1995Date of Patent: June 2, 1998Assignee: The Procter & Gamble CompanyInventors: Bryn Hird, John Collins Dyer, David Harry Melik
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Patent number: 5753359Abstract: The present invention relates to compressable polymeric foam materials useful as insulation. These polymeric foams are prepared by polymerization of certain water-in-oil emulsions having a relatively high ratio of water phase to oil phase, commonly known as "HIPEs." The polymeric foam materials comprise a generally hydrophobic, flexible or semi-flexible, nonionic polymeric foam structure of interconnected open-cells. The foam structures have:(a) a specific surface area per foam volume of at least about 0.01 m.sup.2 /cc;(b) an expanded density of less than about 0.05 g/cc; and(c) a ratio of expanded to compressed thickness of at least about 3:1;wherein when the foam is compressed to 33% of its original expanded thickness and is thereafter maintained without artificial restraint on its surface, said foam will reexpand by no more than 50% after 21 days at ambient temperature (22.degree. C.).Type: GrantFiled: July 15, 1996Date of Patent: May 19, 1998Assignee: The Procter & Gamble CompanyInventors: John Collins Dyer, Thomas Allen DesMarais
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Patent number: 5741581Abstract: Low density collapsed absorbent foams materials that, upon contact with aqueous fluids, in particular urine, can expand and absorb these fluids. These low density foams typically have an expanded thickness from about 6 to about 10 times the thickness of the foams in their collapsed state. These low density foams are made by polymerizing high internal phase emulsions (HIPEs) where the volume to weight ratio of the water phase to the oil phase is in the range of from about 55:1 to about 100:1.Type: GrantFiled: May 28, 1996Date of Patent: April 21, 1998Assignee: The Procter & Gamble CompanyInventors: Thomas Allen DesMarais, Keith Joseph Stone, John Collins Dyer, Bryn Hird, Stephen Allen Goldman, Paul Seiden
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Patent number: 5728743Abstract: The invention relates to the use of polymeric foam materials for insulation. These polymeric foams are prepared by polymerization of certain water-in-oil emulsions having a relatively high ratio of water phase to oil phase, commonly known in the art as high internal phase emulstions, or "HIPEs." The HIPE-derived foam materials used in the present invention comprise a generally hydrophobic, flexible, semi-flexible, or rigid nonionic polymeric foam structure of interconnected open-cells. These foam structures have:A) a specific surface area per foam volume of at least about 0.01 m.sup.2 /cc;B) a density of less than about 0.05 g/cc; andC) a glass transition temperature (Tg) of between about -20.degree. and 90.degree. C.The foams can be used as thermal, acoustic, and/or mechanical insulation materials.In a preferred embodiment, the foams used can be prepared, packaged, and shipped in a compressed, high density state and will "spring back" upon activation (e.g. heat) to the original density of the foam.Type: GrantFiled: August 21, 1996Date of Patent: March 17, 1998Assignee: The Procter & Gamble CompanyInventors: John Collins Dyer, Thomas Allen DesMarais
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Patent number: 5652194Abstract: Relatively thin, collapsed, i.e. unexpanded, polymeric foam materials that, upon contact with aqueous body fluids, expand and absorb such fluids, are disclosed. A process for consistently obtaining such relatively thin, collapsed polymeric foam materials by polymerizing a specific type of water-in-oil emulsion, commonly known as High Internal Phase Emulsions or "HIPE", is also disclosed.Type: GrantFiled: November 18, 1994Date of Patent: July 29, 1997Assignee: The Procter & Gamble CompanyInventors: John Collins Dyer, Thomas Allen DesMarais, Keith Joseph Stone, Paul Seiden, Stephen Allen Goldman, Herbert Louis Retzsch