Patents by Inventor Brian David Bothwell

Brian David 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).

  • Antimicrobial polymer
    Patent number: 6706855
    Abstract: An antimicrobial polymer, characterised in that it carries a covalently bound chromophoric marker. The antimicrobial polymer is preferably a cationic antimicrobial polymer, especially a poly(hexamethylenebiguanide). Also claimed are compositions containing the antimicrobial polymer, a method for treating a medium using the antimicrobial polymer and a method for detecting the antimicrobial polymer in a medium.
    Type: Grant
    Filed: March 4, 2002
    Date of Patent: March 16, 2004
    Assignee: Avecia Limited
    Inventors: Andrew Neale Collins, Brian David Bothwell, Graham John McPherson