Patents by Inventor Kevin J. Parr

Kevin J. Parr 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 polymers and compositions containing them
    Patent number: 5532290
    Abstract: A polymer having antimicrobial properties derived from one or more ethylenically unsaturated monomers characterized in that the polymer has a phenolic antimicrobial agent covalently bound thereto. The polymer may be used as a sanitizing agent in a sanitizing composition comprising a solvent having a sanitizing agent dissolved or dispersed therein.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: July 2, 1996
    Assignee: Reckitt & Colman Inc.
    Inventors: Ian M. Newington, Kevin J. Parr, Patricia I. Bowman, Karen A. McCue
  • Reference half-cell electrode
    Patent number: 5360529
    Abstract: A half-cell reference electrode comprises an electrode member in electrochemical contact with at least one gelled electrolyte solution which itself is contactable with the liquid to be tested wherein the gelling agent comprises a polymer containing acrylamide units substituted with a group or groups which lower the polymer's tendency to hydrolyse compared to polyacrylamide while providing a polymer that can form a gelled solution in 2.6M sodium/potassium nitrate solution (2.21M potassium nitrate and 0.39M sodium nitrate) comprising at least 75% (w/w) sodium/potassium nitrate solution.
    Type: Grant
    Filed: April 21, 1993
    Date of Patent: November 1, 1994
    Assignee: Eastman Kodak Company
    Inventors: Stephen J. Edwards, John Chapples, Kevin J. Parr, Philippe G. Robert
  • Radiation-sensitive composition and use thereof in the preparation of electrochemical ion sensors
    Patent number: 5240586
    Abstract: Radiation-sensitive compositions are disclosed of a type suitable for preparing ion sensitive membranes for electrochemical ion sensors. The compositions are comprised of a radiation-sensitive polymer containing radiation-sensitive recurring units having an ionophore group and recurring units having a crosslinking group. In preparing a membrane the radiation-sensitive composition is coated onto a sensor, exposed to activating radiation to produce crosslinking in areas where the membrane structure is desired, and removed in any remaining non-exposed areas.
    Type: Grant
    Filed: February 6, 1990
    Date of Patent: August 31, 1993
    Assignee: Eastman Kodak Company
    Inventors: Christopher P. Moore, Malcolm D. Purbrick, Derek A. Thomason, Kevin J. Parr