Patents by Inventor Anne M. Ruh

Anne M. Ruh 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).

  • Patent number: 5565422
    Abstract: A process which produces a detergent composition that exhibits improved solubility as well as improved flow properties is provided. The improved solubility can be detected by evidence of increased solubility of the surfactants in the washing solution and/or by the decreased amount of detergent residue left on laundered clothes. It has now been discovered that incorporating nonionic surfactant on and/or in spray-dried detergent granules before cooling the granules and while they are relatively hot, and thereafter cooling and mixing the granules improves the solubility and flow properties of the granules.
    Type: Grant
    Filed: June 23, 1995
    Date of Patent: October 15, 1996
    Assignee: The Procter & Gamble Company
    Inventors: Angela G. Del Greco, Anne M. Ruh