Patents by Inventor David C. Osborn

David C. Osborn 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).

  • Ocular implants and methods for their manufacture
    Patent number: 5130160
    Abstract: A method for modifying an ocular implant polymer surface by the gamma-irradiation or electron beam irradiation induced polymerization thereon of N-vinylpyrrolidone, 2-hydroxyethylmethacrylate or a mixture thereof while maintaining the following conditions:(a) monomer concentration in the range of from about 0.1% to about 50%, by weight;(b) total gamma dose in the range of from about 0.001 to less than about 0.50 Mrad; and(c) gamma dose rate in the range of from about 10 to about 2500 rads/minute or electron beam irradiation dose rate in the range of from about 10 to about 10.sup.8 rads/minute.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: July 14, 1992
    Assignee: University of Florida
    Inventors: Eugene P. Goldberg, James W. Burns, G. Sudesh Kunar, David C. Osborn, Jeffrey A. Larson, John W. Sheets, Ali Yahiaoui, Richard Robinson
  • Surface modified surgical instruments, devices, implants, contact lenses and the like
    Patent number: 5100689
    Abstract: Improved medical devices and instruments prepared by an improved method of producing hydrophilic, gamma-irradiation or electron beam-irradiation induced polymerized and chemically grafted coatings or plastic surfaces of articles adapted for contacting living tissue,the improvement comprising carrying out the graft polymerization in an aqueous solution under specific combinations of the following conditions:1) monomer concentration in the range of from about 0.1% to about 50%, by weight;2) total gamma or electron beam irradiation dose in the range of from about 0.001 to less than about 0.50 Mrad; and3) gamma dose rate in the range of from about 10 to about 2500 rads/min or electron beam-irradiation dose rate in the range of from about 10 to about 10.sup.8 rads/min.
    Type: Grant
    Filed: October 5, 1990
    Date of Patent: March 31, 1992
    Assignee: University of Florida
    Inventors: Eugene P. Goldberg, James W. Burns, G. Sudesh Kumar, David C. Osborn, Jeffrey A. Larson, John W. Sheets, Ali Yahiaoui, Robinson, Richard
  • Surface modified surgical instruments, devices, implants, contact lenses and the like
    Patent number: 4961954
    Abstract: Improved medical devices and instruments prepared by an improved method of producing hydrophilic, gamma irradiation induced polymerized and chemically grafted coatings or plastic surfaces of articles adapted for contacting living tissue, the improvement comprising carrying out the graft polymerization in an aqueous solution under specific combinations of the following conditions:(1) monomer concentration in the range of from about 0.5% to about 50%, by weight;(2) total gamma dose in the range of from about 0.01 to less than about 0.50 Mrad;(3) gamma dose rate in the range of from about 10 to about 2500 rads/min; and(4) maintaining the molecular weight of the polymer in solution in the range of from about 250,000 to about 5,000,000.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: October 9, 1990
    Assignee: University of Florida
    Inventors: Eugene P. Goldberg, James W. Burns, G. Sudesh Kumar, David C. Osborn, Jeffrey A. Larson, John W. Sheets, Ali Yahiaoui, Richard Robinson