Patents by Inventor Philippa Clarke

Philippa Clarke 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).

  • Avoidance of precipitation in 3-isothiazolone formulations
    Patent number: 5670529
    Abstract: Compositions comprising optionally substituted 3-isothiazolone derivative compounds, a metal nitrate, cupric (Cu.sup.2+) ion in ppm amounts in the form of an inorganic copper salt and water are described for preventing the formation of unsightly precipitations in these compositions during storage.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: September 23, 1997
    Assignee: Rohm and Haas Company
    Inventor: Philippa Clarke