Patents by Inventor Donald J. Paterson

Donald J. Paterson 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).

  • Biocidal composition and use
    Patent number: 5763482
    Abstract: An antimicrobial composition and method for controlling the growth of microbes in an aqueous system is disclosed, the composition comprising an amount, effective for the purpose of a 2-bromo-2- (bromomethyl)-glutaronitrile and a quaternary ammonium compound.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: June 9, 1998
    Assignee: BetzDearborn Inc.
    Inventors: Donald J. Paterson, Howard A. Cash
  • Aqueous stabilized isothiazolone blends
    Patent number: 5512213
    Abstract: A treatment for stabilizing an isothiazolone compound comprising adding to the compound a stabilizing amount of a metal salt, wherein the cation of the metal salt is an alkali metal, and the anion is selected from the group consisting of acetate, citrate, phosphate and borate.
    Type: Grant
    Filed: March 1, 1995
    Date of Patent: April 30, 1996
    Assignee: Betz Laboratories, Inc.
    Inventor: Donald J. Paterson
  • Water based biocide
    Patent number: 5312841
    Abstract: The present invention relates to trihalo alkyl sulfone and mixtures of bis(trichloro methyl) sulfone (BTCMS), a non-ionic surfactant and a cationic quaternary ammonium halide surfactant formulated as a stable solution in water. The method of formulation comprises adding the BTCMS to an aqueous system containing a nonionic surfactant and a cationic quaternary ammonium halide surfactant. These formulations are useful as biocides and present advantages over organic solvent based formulations.
    Type: Grant
    Filed: June 15, 1992
    Date of Patent: May 17, 1994
    Assignee: Betz PaperChem, Inc.
    Inventor: Donald J. Paterson