Patents by Inventor Robert B. Brinkman

Robert B. Brinkman 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).

  • Crayon wax composition
    Patent number: 3933708
    Abstract: An improved crayon wax composition having a wax base, stearic acid, pigment and an additive mixture which comprises polyethylene having a molecular weight between 500,000-6,000,000 is disclosed. Use of the polyethylene in small amounts enables the replacement of higher melting point waxes with low-melting point paraffin wax of 120.degree.-140.degree.F, while still maintaining the required performance qualities of the crayon wax.
    Type: Grant
    Filed: May 24, 1973
    Date of Patent: January 20, 1976
    Assignee: Sun Oil Company of Pennsylvania
    Inventor: Robert B. Brinkman