Patents by Inventor Rhona Alexandra Knox

Rhona Alexandra Knox 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).

  • Detergent compositions containing (poly)carboxylates, organo diphosphonic and acrylic acid derived components, and silicate
    Patent number: 5801137
    Abstract: A detergent composition containing in combination(a) a detergent builder system containing a carboxylate or polycarboxylate builder and having a major proportion by weight of non-carbonate builder compound;(b) an organo diphosphonic acid or its salts or complexes or any mixture thereof; and(c) an organic polymer containing acrylic acid or its salts, having an average molecular weight of less than 15,000.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: September 1, 1998
    Assignee: The Procter & Gamble Company
    Inventors: Michael Crombie Addison, Lynda Anne Jones, Rhona Alexandra Knox
  • Rinse aid compositions comprising non-nitrogen-containing organs diphosphonic acid, salt or complex thereof
    Patent number: 5712244
    Abstract: There is provided a rinse aid composition containing an organo diphosphonic acid or its salts or complexes. The pH of said composition as a 1% solution in distilled water at 20.degree. C. is preferably less than 7.
    Type: Grant
    Filed: August 28, 1996
    Date of Patent: January 27, 1998
    Assignee: Proctor & Gamble Company
    Inventors: Michael Crombie Addison, Lynda Anne Jones, Rhona Alexandra Knox
  • Detergent tablet
    Patent number: D420763
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: February 15, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Jennifer Mary Forward, Alasdair Duncan McGregor, Rhona Alexandra Knox
  • Detergent tablet
    Patent number: D431094
    Type: Grant
    Filed: May 26, 1998
    Date of Patent: September 19, 2000
    Assignee: The Procter & Gamble Company
    Inventors: Jennifer Mary Forward, Alasdair Duncan McGregor, Rhona Alexandra Knox