Patents by Inventor Donald Patrick Johnson

Donald Patrick Johnson 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).

  • Process for the manufacture of a cosmetic or pharmaceutical stick
    Patent number: 4069574
    Abstract: A process for manufacturing a wax-like cosmetic stick product having an improved contour on its upper surface, by filling at the open bottom with the stick material in a molten state, the case having a cap which provides the contour, allowing the stick to solidify, and placing a push-up device in the bottom of the case.
    Type: Grant
    Filed: October 15, 1976
    Date of Patent: January 24, 1978
    Assignee: American Cyanamid Company
    Inventors: Helga Krevald, Donald Patrick Johnson, Keith Woodruff