Patents by Inventor Ubonwan A. Stewart

Ubonwan A. Stewart 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).

  • Sterilization of medical adhesive kits
    Patent number: 7371345
    Abstract: Adhesive compositions, particularly medical adhesive compositions, often include several components that may react differently to different sterilization processes, particularly when combined with one another. The present invention is directed to methods of sterilizing different components or groups of components of a final adhesive composition. The different components or groups of components may be sterilized in separate containers before packaging the components or groups of components within a kit, and thereafter sterilizing the kit.
    Type: Grant
    Filed: December 23, 2002
    Date of Patent: May 13, 2008
    Assignee: Closure Medical Corporation
    Inventors: Ubonwan A. Stewart, Melanie Vander Klok
  • Sterilization of medical adhesive kits
    Publication number: 20040120849
    Abstract: Adhesive compositions, particularly medical adhesive compositions, often include several components that may react differently to different sterilization processes, particularly when combined with one another. The present invention is directed to methods of sterilizing different components or groups of components of a final adhesive composition. The different components or groups of components may be sterilized in separate containers before packaging the components or groups of components within a kit, and thereafter sterilizing the kit.
    Type: Application
    Filed: December 23, 2002
    Publication date: June 24, 2004
    Applicant: CLOSURE MEDICAL CORPORATION
    Inventors: Ubonwan A. Stewart, Melanie Vander Klok
  • Sterilized cyanoacrylate solutions containing thickeners
    Patent number: 6743858
    Abstract: A method of making a sterile adhesive composition includes placing a mixture of a polymerizable adhesive monomer and a thickening agent in a container, sealing the container, and sterilizing the mixture and the container. The method provides superior viscosity for the monomer composition. An adhesive composition includes 2-octyl cyanoacrylate and at least one thickener. The sterile adhesive composition is particularly useful as a medical adhesive and can comprise 1,1-disubstituted ethylene monomers, such as &agr;-cyanoacrylates.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: June 1, 2004
    Assignee: Closure Medical Corporation
    Inventors: Timothy Hickey, Ubonwan A. Stewart, Jerry Jonn, John S. Bobo
  • Cyanoacrylate solutions containing preservatives
    Patent number: 6579469
    Abstract: An adhesive composition that contains a preservative is particularly useful as a medical adhesive and can include alkyl cyanoacrylate monomers. The preservative is preferably soluble in the monomer. The composition may optionally be sterilized by placing a mixture of a polymerizable adhesive monomer and a preservative in a container, sealing the container, and sterilizing the mixture and the container.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: June 17, 2003
    Assignee: Closure Medical Corporation
    Inventors: William S. C. Nicholson, Upvan Narang, Ubonwan A. Stewart, Daniel L. Hedgpeth, Ibraheem T. Badejo, Lawrence H. Mainwaring
  • Sterilized cyanoacrylate solutions containing thickeners
    Publication number: 20020156203
    Abstract: A method of making a sterile adhesive composition includes placing a mixture of a polymerizable adhesive monomer and a thickening agent in a container, sealing the container, and sterilizing the mixture and the container. The method provides superior viscosity for the monomer composition. An adhesive composition includes 2-octyl cyanoacrylate and at least one thickener. The sterile adhesive composition is particularly useful as a medical adhesive and can comprise 1,1-disubstituted ethylene monomers, such as &agr;-cyanoacrylates.
    Type: Application
    Filed: April 12, 2002
    Publication date: October 24, 2002
    Applicant: CLOSURE MEDICAL CORPORATION
    Inventors: Timothy Hickey, Ubonwan A. Stewart, Jerry Jonn, John S. Bobo
  • Sterilized cyanoacrylate solutions containing thickeners
    Patent number: 6433096
    Abstract: A method of making a sterile adhesive composition includes placing a mixture of a polymerizable adhesive monomer and a thickening agent in a container, sealing the container, and sterilizing the mixture and the container. The method provides superior viscosity for the monomer composition. An adhesive composition includes 2-octyl cyanoacrylate and at least one thickener. The sterile adhesive composition is particularly useful as a medical adhesive and can comprise 1,1-disubstituted ethylene monomers, such as &agr;-cyanoacrylates.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: August 13, 2002
    Assignee: Closure Medical Corporation
    Inventors: Timothy Hickey, Ubonwan A. Stewart, Jerry Jonn, John S. Bobo
  • Sterilized cyanoacrylate solutions containing thickeners
    Publication number: 20020065336
    Abstract: A method of making a sterile adhesive composition includes placing a mixture of a polymerizable adhesive monomer and a thickening agent in a container, sealing the container, and sterilizing the mixture and the container. The method provides superior viscosity for the monomer composition. An adhesive composition includes 2-octyl cyanoacrylate and at least one thickener. The sterile adhesive composition is particularly useful as a medical adhesive and can comprise 1,1-disubstituted ethylene monomers, such as &agr;-cyanoacrylates.
    Type: Application
    Filed: June 22, 2001
    Publication date: May 30, 2002
    Applicant: CLOSURE MEDICAL CORPORATION
    Inventors: Timothy Hickey, Ubonwan A. Stewart, Jerry Jonn, John S. Bobo
  • Sterilized cyanoacrylate solutions containing thickeners
    Patent number: 6310166
    Abstract: A method of making a sterile adhesive composition includes placing a mixture of a polymerizable adhesive monomer and a thickening agent in a container, sealing the container, and sterilizing the mixture and the container. The method provides superior viscosity for the monomer composition. The sterile adhesive composition is particularly useful as a medical adhesive and can comprise 1,1-disubstituted ethylene monomers, such as &agr;-cyanoacrylates.
    Type: Grant
    Filed: August 12, 1999
    Date of Patent: October 30, 2001
    Assignee: Closure Medical Corporation
    Inventors: Timothy Hickey, Ubonwan A. Stewart
  • Electron beam sterilization of liquid adhesive compositions
    Patent number: 6143805
    Abstract: A method for sterilizing a liquid adhesive composition includes subjecting the composition to electron beam irradiation while it is enclosed in a container.
    Type: Grant
    Filed: February 18, 1998
    Date of Patent: November 7, 2000
    Assignee: Closure Medical Corporation
    Inventors: Timothy Hickey, Ubonwan A. Stewart
  • Treatment methods for glass medical adhesive applicators
    Patent number: 6055828
    Abstract: Treatment methods for glass medical adhesive applicators in which a glass applicator is exposed to ammonium sulfate, an acidic gas, a plasma or a silanizing agent in order to remove or coat alkalide materials trapped in the glass.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: May 2, 2000
    Assignee: Closure Medical Corporation
    Inventors: Andres Rivera, Upvan Narang, Ubonwan A. Stewart