Patents by Inventor Keith P. Davis

Keith P. Davis 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).

  • Water treatment agent
    Patent number: 5606105
    Abstract: Unsaturated compounds which can be dissolved in aqueous based solvents, such as ethylenic or acetylenic carboxylate or alcohols with less than 10 carbon atoms, especially maleic and/or acrylic acid or propargyl alcohol, are reacted with alkali metal phosphite in aqueous solution at neutral or alkaline pH in the presence of free radical initiators such as persulphate to form threshold scale and corrosion inhibitors.
    Type: Grant
    Filed: August 18, 1994
    Date of Patent: February 25, 1997
    Assignee: Albright & Wilson Limited
    Inventors: Keith P. Davis, Peter A. T. Hoye, Michael J. Williams, Gary Woodward, Martin P. Greenhall
  • Water treatment agent
    Patent number: 5386038
    Abstract: Unsaturated compounds which can be dissolved in aqueous based solvents, such as ethylenic or acetylenic carboxylate or alcohols with less than 10 carbon atoms, especially maleic and/or acrylic acid or propargyl alcohol, are reacted with alkali metal phosphite in aqueous solution at neutral or alkaline pH in the presence of free radical initiators such as persulphate to form threshold scale and corrosion inhibitors.
    Type: Grant
    Filed: September 17, 1992
    Date of Patent: January 31, 1995
    Assignee: Albright & Wilson Limited
    Inventors: Keith P. Davis, Peter A. T. Hoye, Michael J. Williams, Gary Woodward, Martin P. Greenhall
  • Deactivation of phosphonium biocides
    Patent number: 5030358
    Abstract: Solutions of organophosphorus biocides which also contain dissolved oxygen are deactivated by adding a catalytic amount of activated carbon.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: July 9, 1991
    Assignee: Albright & Wilson Limited
    Inventors: Kenneth G. Cooper, Robert E. Talbot, Keith P. Davis, Mark A. Saunders
  • Biocidal water treatment
    Patent number: 4673509
    Abstract: The growth of microbiological contaminants in industrial cooling and process waters and in aqueous based products, susceptible to microbiological spoilage on storage, is inhibited by the presence of a phosphorus compound having a hydroxy alkyl group directly attached to the phosphorus atom, such as tetrakis hydroxy methyl phosphonium sulphate.
    Type: Grant
    Filed: August 27, 1984
    Date of Patent: June 16, 1987
    Assignee: Albright & Wilson Limited
    Inventors: Keith P. Davis, Robert E. Talbot