Patents by Inventor Rosstain F. Sterling

Rosstain F. Sterling 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).

  • Synthetic surfactant cakes with magnesium chloride
    Patent number: 4874536
    Abstract: A solid water-soluble cake comprising: from 20% to 90% sodium alkyl sulfate (AS)/sodium alkyl benzene sulfonate (LAS), co-surfactant having a 1:1.5 to 1.5:1 ratio and from 0.5% to 25% by weight magnesium chloride. One key advantage is that the cakes of this invention have a more constant dissolution rate over a wider range of water temperatures than comparable cakes made without the MgCl.sub.2. The cakes are used in automatic toilet bowl cleanser dispensers.
    Type: Grant
    Filed: June 29, 1984
    Date of Patent: October 17, 1989
    Assignee: The Proctor & Gamble Company
    Inventors: Wilbur C. Strickland, Jr., Rosstain F. Sterling
  • Free fatty alcohol and buffered alkali earth metal surfactant cakes for optimum performance
    Patent number: 4477363
    Abstract: A solid cake comprising 1% to 15% free fatty alcohol and 20% to 90% buffered alkali earth metal alkyl sulfate surfactant. Perfume, dye or salt, or any combination thereof are added. The surfactant and cakes made therefrom have pH's of from about 6 to about 10. The free fatty alcohol and buffered surfactant compositions and their cakes have improved longevity and improved stability. Preferred cakes are made with coconut free fatty alcohol and buffered magnesium alkyl sulfate.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: October 16, 1984
    Assignee: The Procter & Gamble Company
    Inventors: Louis F. Wong, Rosstain F. Sterling, Thomas A. Borcher, Sr.
  • Buffered alkali earth metal surfactant cakes for dosing dispenser
    Patent number: 4476046
    Abstract: A solid cake comprising 20% to 90% buffered alkali earth metal alkyl sulfate surfactant. Perfume, dye or salt, or any combination thereof are added. The surfactant and cakes made therefrom have pH's of from about 6 to about 10. The buffered surfactants and their cakes have improved stability and improved longevity. Preferred cakes are made with buffered magnesium alkyl sulfate.
    Type: Grant
    Filed: December 23, 1982
    Date of Patent: October 9, 1984
    Assignee: The Procter & Gamble Company
    Inventors: Louis F. Wong, Rosstain F. Sterling, Thomas A. Borcher, Sr.