Patents by Inventor Peter R. B. Lawrence

Peter R. B. Lawrence 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).

  • Polymeric compositions and their production
    Patent number: 4996251
    Abstract: The invention provides a substantially dry particulate composition comprising a polyacrylamide and an amidase. An aqueous composition made by dispersing this into water will then have a satisfactorily low content of residual acrylamide even if the initial polymer was contaminated with monomer. The composition is made by blending dry polyacrylamide particles with the amidase.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: February 26, 1991
    Assignee: Allied Colloids Ltd.
    Inventors: David Farrar, Peter Flesher, Peter R. B. Lawrence