Patents by Inventor Donald E. Seymour

Donald E. Seymour 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).

  • Adhesive-coated sheet material incorporating anti-bacterial substances
    Patent number: 4460369
    Abstract: Adhesive-coated liquid-impervious moisture-vapour-permeable thin polymer sheet suitable as a wound covering has an antibacterial, preferably a solid such as silver sulphadiazine, disseminated throughout the adhesive layer, usually in amounts up to 15 wt. %, to provide uniform antibacterial properties over the wound and surrounding skin areas.
    Type: Grant
    Filed: December 21, 1981
    Date of Patent: July 17, 1984
    Assignee: Smith & Nephew Research Ltd.
    Inventor: Donald E. Seymour
  • Adhesive-coated sheet material incorporating anti-bacterial substances
    Patent number: 4340043
    Abstract: Adhesive-coated liquid-impervious moisture-vapor-permeable thin polymer sheet suitable as a wound covering has an antibacterial, preferably a solid such as silver sulphadiazine, disseminated throughout the adhesive layer, usually in amounts up to 15 wt. %, to provide uniform antibacterial properties over the wound and surrounding skin areas.
    Type: Grant
    Filed: July 17, 1980
    Date of Patent: July 20, 1982
    Assignee: Smith & Nephew Research Ltd.
    Inventor: Donald E. Seymour
  • Method of preparing a copper complex for use as an algaecide
    Patent number: 4324578
    Abstract: A method of preparing a copper complex to be used in eliminating the growth of aquatic or marine plant life, such as algae. The copper complex is formed by reacting finely divided water-insoluble copper carbonate with the combination of monoethanolamine and triethanolamine. The copper compound is completely solubilized and complexed by the combination to provide a copper complex having improved stability and containing an increased amount of elemental copper as compared to copper complexes formed by prior methods, thereby making the complex more effective as an algaecide.
    Type: Grant
    Filed: February 25, 1980
    Date of Patent: April 13, 1982
    Assignee: Applied Biochemists, Inc.
    Inventors: Donald E. Seymour, Greg A. Seymour, Mark J. Jaber
  • Algaecidal composition
    Patent number: 4098602
    Abstract: An algaecidal composition comprising the combination of an ammonium quaternary compound and a copper complex formed by reacting a copper compound with a complexing material, such as an alkanolamine, a tertiary amine, a diamine, ammonium hydroxide, or a polyethylene glycol. The algaecidal composition has extended stability and shelf-life and possess improved algaecidal effectiveness.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: July 4, 1978
    Assignee: Applied Biochemists, Inc.
    Inventors: Donald E. Seymour, James C. Schmidt, Donald A. Bezella
  • Algaecidal composition
    Patent number: 3930834
    Abstract: A method of preparing a copper complex for use in eliminating the growth of marine plant life such as algae. The copper complex is provided by initially reacting an insoluble copper compound with an aqueous solution of an acid to dissociate the copper ions, and thereafter chelating the released copper ions to form a copper complex. The resulting complex has improved stability to both heat and light and contains an increased amount of copper compared to copper complexes formed by prior methods, thereby making the complex more effective as an algaecide.
    Type: Grant
    Filed: January 14, 1974
    Date of Patent: January 6, 1976
    Assignee: Applied Biochemists, Inc.
    Inventors: David T. Schulteis, Donald E. Seymour