Patents by Inventor Sigridur Jonasdottir

Sigridur Jonasdottir 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).

  • Olefin copolymers containing hydrolytically cleavable linkages and use thereof in degradable products
    Patent number: 7592408
    Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.
    Type: Grant
    Filed: May 28, 2008
    Date of Patent: September 22, 2009
    Assignee: SRI International
    Inventors: Robert B. Wilson, Jr., Sigridur Jonasdottir
  • Olefin Copolymers Containing Hydrolytically Cleavable Linkages and Use Thereof In Degradable Products
    Publication number: 20080227940
    Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.
    Type: Application
    Filed: May 28, 2008
    Publication date: September 18, 2008
    Applicant: SRI International
    Inventors: Robert B. Wilson, Sigridur Jonasdottir
  • Olefin copolymers containing hydrolytically cleavable linkages and use thereof in degradable products
    Patent number: 7399817
    Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.
    Type: Grant
    Filed: November 28, 2005
    Date of Patent: July 15, 2008
    Assignee: SRI International
    Inventors: Robert B. Wilson, Jr., Sigridur Jonasdottir
  • Olefin copolymers containing hydrolytically cleavable linkages and use thereof in degradable products
    Patent number: 7037992
    Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: May 2, 2006
    Assignee: SRI International
    Inventors: Robert B. Wilson, Jr., Sigridur Jonasdottir
  • Olefin copolymers containing hydrolytically cleavable linkages and use thereof in degradable products
    Publication number: 20060079654
    Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.
    Type: Application
    Filed: November 28, 2005
    Publication date: April 13, 2006
    Applicant: SRI International
    Inventors: Robert Wilson, Sigridur Jonasdottir
  • Olefin copolymers containing hydrolytically cleavable linkages and use thereof in degradable products
    Publication number: 20030236371
    Abstract: The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer.
    Type: Application
    Filed: March 18, 2003
    Publication date: December 25, 2003
    Inventors: Robert B. Wilson, Sigridur Jonasdottir
  • Hydrolytically degradable olefin copolymers
    Patent number: 6534610
    Abstract: Hydrolytically degradable olefin copolymers, such as ethylene copolymers, contain a hydrolyzable component in the backbone that allows the copolymer to be broken down into dispersable fragments upon exposure to aqueous conditions. The copolymers are prepared by transition metal-catalyzed polymerization.
    Type: Grant
    Filed: July 6, 2001
    Date of Patent: March 18, 2003
    Assignee: SRI International
    Inventors: Robert B. Wilson, Jr., Sigridur Jonasdottir
  • Hydrolytically degradable olefin copolymers
    Patent number: 6288184
    Abstract: Hydrolytically degradable olefin copolymers, such as ethylene copolymers, contain a hydrolyzable component in the backbone that allows the copolymer to be broken down into dispersable fragments upon exposure to aqueous conditions. The copolymers are prepared by transition metal-catalyzed polymerization.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: September 11, 2001
    Assignee: SRI International
    Inventors: Robert B. Wilson, Jr., Sigridur Jonasdottir