Patents by Inventor Wendy Coppenrath

Wendy Coppenrath 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).

  • Concentrated liquid detergent composition comprising an alkyl ether sulphate and a process for making the composition
    Patent number: 5635466
    Abstract: A concentrated aqueous surfactant solution comprising alkyl ether sulphate and alkaline earth metal, preferably magnesium. The composition is a stable liquid which is suitable for making into cleaning products, especially dish washing liquids. The concentrated surfactant solution can be prepared by partial neutralisation of the acid precursor with the hydroxide or oxide of the alkaline earth metal, followed by a further neutralisation with the hydroxide of an alkali metal or ammonium.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: June 3, 1997
    Assignee: The Procter & Gamble Company
    Inventors: Allan Burdon, Katherine J. Cope, Wendy Coppenrath, Guy Stasino, Brian E. Talkes, Stefano Zenezini