Patents by Inventor Philip H. Steiger

Philip H. Steiger 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).

  • Diquaternary compounds useful as bleach activators
    Patent number: 5705681
    Abstract: Diquaternary ammonium esters useful as bleach activators are disclosed as are bleach compositions comprising such an ester and peroxygen compound yield peroxide in solution.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: January 6, 1998
    Assignee: Witco Corporation
    Inventors: Philip H. Steiger, Shaun F. Clancy, Owen Portwood
  • Diquaternary compounds useful as bleach activators, and compositions containing them
    Patent number: 5662827
    Abstract: Disclosed are bleaching compositions comprising diquaternary ammonium esters which are useful as bleach activators with a peroxygen compound to yield peroxide in solution.
    Type: Grant
    Filed: February 23, 1995
    Date of Patent: September 2, 1997
    Assignee: Witco Corporation
    Inventors: Philip H. Steiger, Shaun F. Clancy, Owen Portwood
  • Diquaternary bleach activators and compositions containing them
    Patent number: 5399746
    Abstract: Diquaternary ammonium esters useful as bleach activators are disclosed, as are bleach compositions comprising such an ester and a peroxygen compound which yields peroxide in solution.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: March 21, 1995
    Assignee: Witco Corporation
    Inventors: Philip H. Steiger, Shaun F. Clancy, Owen Portwood