Patents by Inventor Brian D. Bothwell

Brian D. Bothwell 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).

  • Imidazolium, pyrazolium and triazolium sailts as swimming pool sanitizers
    Patent number: 5631274
    Abstract: The use of oligomeric imidazolium, pyrazolium and triazolium salts as swimming pool sanitizers having improved compatibility with chlorine. Bisimidazolium salts are preformed.
    Type: Grant
    Filed: April 11, 1995
    Date of Patent: May 20, 1997
    Assignee: Zeneca Limited
    Inventors: Peter W. Austin, Clive H. Barlow, Brian D. Bothwell, Andrew N. Collins, Mark R. James
  • Swimming pool or like aqueous system containing an imidazolium, pyrazolium or triazolium salt as sanitizer
    Patent number: 5620595
    Abstract: The use of oligomeric imidazolium, pyrazolium and triazolium salts as swimming pool sanitizers having improved compatibility with chlorine. Bisimidazolium salts are preformed.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: April 15, 1997
    Assignee: Zeneca Limited
    Inventors: Peter W. Austin, Clive H. Barlow, Brian D. Bothwell, Andrew N. Collins, Mark R. James