Patents by Inventor Richard Amos
Richard Amos 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: 7144573Abstract: A reagent and related method for use in passivating a biomaterial surface, the reagent including a latent reactive group and a bifunctional aliphatic acid (e.g., fatty acid), in combination with a spacer group linking the latent reactive group to the aliphatic acid in a manner that preserves the desired function of each group. Once bound to the surface, via the latent reactive group, the reagent presents the aliphatic acid to the physiological environment, in vivo, in a manner (e.g., concentration and orientation) sufficient to hold and orient albumin.Type: GrantFiled: August 26, 2005Date of Patent: December 5, 2006Assignee: SurModics, Inc.Inventors: Patrick E. Guire, Aron B. Anderson, Richard A. Amos, Terrence P. Everson, Peter H. Duquette
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Patent number: 7087658Abstract: A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive groups adapted to remain unattached to the surface, and thus serve as photoinitiators for the activation of polymerizable compounds in order to form a polymer layer thereon. Also provided are coating agents, per se, as well as a method of using such agents and the resultant surfaces and devices fabricated therefrom.Type: GrantFiled: December 23, 2003Date of Patent: August 8, 2006Assignee: SurModics, Inc.Inventors: Dale G. Swan, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Ralph A. Chappa, Sean M. Stucke, Peter H. Duquette
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Publication number: 20060165751Abstract: A coating composition, in both its uncrosslinked and crosslinked forms, for use in delivering a medicament from the surface of a medical device positioned in vivo. Once crosslinked, the coating composition provides a gel matrix adapted to contain the medicament in a form that permits the medicament to be released from the matrix in a prolonged, controlled, predictable and effective manner in vivo. A composition includes a polyether monomer, such as an alkoxy poly(alkylene glycol), a carboxylic acid-containing monomer, such as (meth)acrylic acid, a photoderivatized monomer, and a hydrophilic monomer such as acrylamide.Type: ApplicationFiled: March 23, 2006Publication date: July 27, 2006Inventors: Stephen Chudzik, Terrence Everson, Richard Amos
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Patent number: 7071235Abstract: A reagent and related method for use in passivating a biomaterial surface, the reagent including a latent reactive group and a bifunctional aliphatic acid (e.g., fatty acid), in combination with a spacer group linking the latent reactive group to the aliphatic acid in a manner that preserves the desired function of each group. Once bound to the surface, via the latent reactive group, the reagent presents the aliphatic acid to the physiological environment, in vivo, in a manner (e.g., concentration and orientation) sufficient to hold and orient albumin.Type: GrantFiled: April 24, 2003Date of Patent: July 4, 2006Assignee: SurModics, Inc.Inventors: Patrick E. Guire, Aron B. Anderson, Richard A. Amos, Terrence P. Everson, Peter H. Duquette
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Patent number: 7056533Abstract: A coating composition, in both its uncrosslinked and crosslinked forms, for use in delivering a medicament from the surface of a medical device positioned in vivo. Once crosslinked, the coating composition provides a gel matrix adapted to contain the medicament in a form that permits the medicament to be released from the matrix in a prolonged, controlled, predictable and effective manner in vivo. A composition includes a polyether monomer, such as an alkoxy poly(alkylene glycol), a carboxylic acid-containing monomer, such as (meth)acrylic acid, a photoderivatized monomer, and a hydrophilic monomer such as acrylamide.Type: GrantFiled: July 9, 2001Date of Patent: June 6, 2006Assignee: SurModics, Inc.Inventors: Stephen J. Chudzik, Terrence P. Everson, Richard A. Amos
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Publication number: 20060052460Abstract: A reagent and related method for use in passivating a biomaterial surface, the reagent including a latent reactive group and a bifunctional aliphatic acid (e.g., fatty acid), in combination with a spacer group linking the latent reactive group to the aliphatic acid in a manner that preserves the desired function of each group. Once bound to the surface, via the latent reactive group, the reagent presents the aliphatic acid to the physiological environment, in vivo, in a manner (e.g., concentration and orientation) sufficient to hold and orient albumin.Type: ApplicationFiled: August 26, 2005Publication date: March 9, 2006Inventors: Patrick Guire, Aron Anderson, Richard Amos, Terrence Everson, Peter Duquette
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Publication number: 20060035086Abstract: This invention relates to a photopolymer mixture capable of use for a liquid crystal alignment layer and to an alignment layer formed from such a photopolymer mixture. The mixture comprises at least two polymerisable materials which are blended together in proportion so as to give a predetermined, preferably low, surface energy. A low surface energy, e.g. less than 4×10?2 N/m can result in an alignment layer which imparts a particular orientation to liquid crystal molecules with out requiring any post cure treatments. The polymerisable materials may be monomers, oligomers or diluents that form long chain molecules when cured and the mixture may contain additives to lower the overall surface energy.Type: ApplicationFiled: October 17, 2003Publication date: February 16, 2006Applicant: QINETIQ LIMITEDInventors: Richard Amos, Guy Bryan-Brown, John Jones, Emma Wood
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Publication number: 20050150589Abstract: A method and apparatus for forming a patterned layer having a surface profile that provides relief structures within an electronic device. The method comprises the steps of taking a carrier film (50) having an inverse of the required surface profile formed on one side thereof, taking a layer of fixable material (54) located on a substrate (52), laminating the carrier film (50) and substrate (52) such the carrier film causes the required surface profile to be formed in the layer of fixable material with a predetermined offset, and then fixing the fixable material. Lamination may be performed using rollers (56,58) or a vacuum process. The process is designed to ensure that the offset can be kept as low as possible, preferably to within 150 nm.Type: ApplicationFiled: May 13, 2003Publication date: July 14, 2005Inventors: Richard Amos, Guy Bryan-Brown, Emma Wood, John Jones, Philip Worthing
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Publication number: 20040137164Abstract: A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive groups adapted to remain unattached to the surface, and thus serve as photoinitiators for the activation of polymerizable compounds in order to form a polymer layer thereon. Also provided are coating agents, per se, as well as a method of using such agents and the resultant surfaces and devices fabricated therefrom.Type: ApplicationFiled: December 23, 2003Publication date: July 15, 2004Applicant: SURMODICS, INC.Inventors: Dale G. Swan, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Ralph A. Chappa, Sean M. Stucke, Peter H. Duquette
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Patent number: 6669994Abstract: A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive groups adapted to remain unattached to the surface, and thus serve as photoinitiators for the activation of polymerizable compounds in order to form a polymer layer thereon. Also provided are coating agents, per se, as well as a method of using such agents and the resultant surfaces and devices fabricated therefrom.Type: GrantFiled: April 23, 2001Date of Patent: December 30, 2003Assignee: SurModics, Inc.Inventors: Dale G. Swan, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Ralph A. Chappa, Sean M. Stucke, Peter H. Duquette
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Publication number: 20030215419Abstract: A reagent and related method for use in passivating a biomaterial surface, the reagent including a latent reactive group and a bifunctional aliphatic acid (e.g., fatty acid), in combination with a spacer group linking the latent reactive group to the aliphatic acid in a manner that preserves the desired function of each group. Once bound to the surface, via the latent reactive group, the reagent presents the aliphatic acid to the physiological environment, in vivo, in a manner (e.g., concentration and orientation) sufficient to hold and orient albumin.Type: ApplicationFiled: April 24, 2003Publication date: November 20, 2003Applicant: SurModics, IncInventors: Patrick E. Guire, Aron B. Anderson, Richard A. Amos, Terrence P. Everson
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Publication number: 20030181423Abstract: A polybifunctional reagent having a polymeric backbone, one or more pendent photoreactive moieties, and two or more pendent bioactive groups. The reagent can be activated to form a bulk material or can be brought into contact with the surface of a previously formed biomaterial and activated to form a coating. The pendent bioactive groups function by promoting the attachment of specific molecules or cells to the bulk material or coated surface. Bioactive groups can include proteins, peptides, carbohydrates, nucleic acids and other molecules that are capable of binding noncovalently to specific and complimentary portions of molecules or cells.Type: ApplicationFiled: February 3, 2003Publication date: September 25, 2003Inventors: David L. Clapper, Melvin J. Swanson, Sheau-Ping Hu, Richard A. Amos, Terrence P. Everson
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Publication number: 20030165613Abstract: A grafting reagent and related method of using the reagent to form a polymeric layer on a support surface, and particularly a porous support surface, in a manner that provides and/or preserves desired properties (such as porosity) of the surface. The reagent and method can be used to provide a thin, conformable, uniform, uncrosslinked coating having desired properties onto the surface of a preformed, and particularly a porous, polymeric substrate.Type: ApplicationFiled: December 21, 2001Publication date: September 4, 2003Inventors: Ralph A. Chappa, Sean M. Stucke, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Dale G. Swan, Peter H. Duquette
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Patent number: 6555587Abstract: A reagent and related method for use in passivating a biomaterial surface, the reagent including a latent reactive group and a bifunctional aliphatic acid (e.g., fatty acid), in combination with a spacer group linking the latent reactive group to the aliphatic acid in a manner that preserves the desired function of each group. Once bound to the surface, via the latent reactive group, the reagent presents the aliphatic acid to the physiological environment, in vivo, in a manner (e.g., concentration and orientation) sufficient to hold and orient albumin.Type: GrantFiled: July 29, 2002Date of Patent: April 29, 2003Assignee: Surmodics, Inc.Inventors: Patrick E. Guire, Aron B. Anderson, Richard A. Amos, Terrence P. Everson
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Patent number: 6514734Abstract: A polybifunctional reagent is provided having a polymeric backbone, one or more pendent latent reactive (preferably photoreactive) moieties, and two or more pendent bioactive groups. The reagent can be activated to form a bulk material or can be brought into contact with the surface of a previously formed biomaterial and activated to form a coating. The pendent bioactive groups function by promoting the attachment of specific molecules or cells to the bulk material or coated surface. Bioactive groups can include proteins, peptides, carbohydrates, nucleic acids and other molecules that are capable of binding noncovalently to specific and complimentary portions of molecules or cells.Type: GrantFiled: June 9, 2000Date of Patent: February 4, 2003Assignee: Surmodics, Inc.Inventors: David L. Clapper, Melvin J. Swanson, Sheau-Ping Hu, Richard A. Amos, Terrence P. Everson
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Patent number: 6465525Abstract: A reagent and related method for use in passivating a biomaterial surface, the reagent including a latent reactive group and a bifunctional aliphatic acid (e.g., fatty acid), in combination with a spacer group linking the latent reactive group to the aliphatic acid in a manner that preserves the desired function of each group. Once bound to the surface, via the latent reactive group, the reagent presents the aliphatic acid to the physiological environment, in vivo, in a manner (e.g., concentration and orientation) sufficient to hold and orient albumin.Type: GrantFiled: October 22, 1998Date of Patent: October 15, 2002Assignee: Surmodics, Inc.Inventors: Patrick E. Guire, Aron B. Anderson, Richard A. Amos, Terrence P. Everson
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Publication number: 20020041899Abstract: A coating composition, in both its uncrosslinked and crosslinked forms, for use in delivering a medicament from the surface of a medical device positioned in vivo. Once crosslinked, the coating composition provides a gel matrix adapted to contain the medicament in a form that permits the medicament to be released from the matrix in a prolonged, controlled, predictable and effective manner in vivo. A composition includes a polyether monomer, such as an alkoxy poly(alkylene glycol), a carboxylic acid-containing monomer, such as (meth)acrylic acid, a photoderivatized monomer, and a hydrophilic monomer such as acrylamide.Type: ApplicationFiled: July 9, 2001Publication date: April 11, 2002Inventors: Stephen J. Chudzik, Terrence P. Everson, Richard A. Amos
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Publication number: 20020004140Abstract: A method of forming a polymer layer on a support surface by the use of a coating agent and polymerizable compounds. The coating agent provides photoreactive groups adapted to attach the agent to the surface, as well as photoreactive groups adapted to remain unattached to the surface, and thus serve as photoinitiators for the activation of polymerizable compounds in order to form a polymer layer thereon. Also provided are coating agents, per se, as well as a method of using such agents and the resultant surfaces and devices fabricated therefrom.Type: ApplicationFiled: April 23, 2001Publication date: January 10, 2002Inventors: Dale G. Swan, Richard A. Amos, Terrence P. Everson, Stephen J. Chudzik, Palph A. Chappa, Sean M. Stucke, Peter H. Duquette
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Polybifunctional reagent having a polymeric backbone and photoreactive moieties and bioactive groups
Patent number: 6121027Abstract: A polybifunctional reagent is provided having a polymeric backbone, one or more pendent photoreactive moieties, and two or more pendent bioactive groups. The reagent can be activated to form a bulk material or can be brought into contact with the surface of a previously formed biomaterial and activated to form a coating. The pendent bioactive groups function by promoting the attachment of specific molecules or cells to the bulk material or coated surface. Bioactive groups can include proteins, peptides, carbohydrates, nucleic acids and other molecules that are capable of binding noncovalently to specific and complimentary portions of molecules or cells.Type: GrantFiled: August 15, 1997Date of Patent: September 19, 2000Assignee: SurModics, Inc.Inventors: David L. Clapper, Melvin J. Swanson, Sheau-Ping Hu, Richard A. Amos, Terrence P. Everson -
Patent number: 6077698Abstract: A chemical linking agent is formed of a di- or higher functional photoactivatable compound having at least one group that is charged to improve water solubility, and two or more photoreactive groups (preferably comprising an aryl ketone such as benzophenone) that allow use of the agent in aqueous systems. Charged groups include salts of organic acids such as sulfonate, phosphonate and carboxylate groups, onium groups such as quaternary ammonium, sulfonium and phosphonium groups, and protonated amines. A surface can be coated with a substance such as a synthetic polymer, carbohydrate, protein, lipid, nucleic acid, drug, vitamin, cofactor or dye by forming an aqueous solution of the linking agent and the substance, placing the solution in contact with the surface and activating the photoreactive groups of the linking agent to cross-link the substance to the surface.Type: GrantFiled: January 2, 1998Date of Patent: June 20, 2000Assignee: SurModics, Inc.Inventors: Dale G. Swan, Richard A. Amos, Terrence P. Everson