Patents by Inventor Elsworth J. Weaver

Elsworth J. Weaver 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).

  • Modified phenolic tackifier
    Patent number: 4146513
    Abstract: Tack is imparted to uncured elastomers by the inclusion of the product of the reaction between an alkylphenol-formaldehyde condensation product having methylol groups with di-2-hydroxyalkylamine or morpholine. In addition to imparting tack to the elasatomer, the tackifier of this invention does not interfere with but tends to enhance the development of adhesion of the elastomer to reinforcing fibers.
    Type: Grant
    Filed: October 13, 1977
    Date of Patent: March 27, 1979
    Assignee: Ashland Oil, Inc.
    Inventors: Elsworth J. Weaver, James N. Mitchell
  • Modified phenolic tackifier
    Patent number: 4146512
    Abstract: Tack is imparted to uncure elastomers by the inclusion of the product of the reaction between an alkylphenol-formaldehyde condensation product having methylol groups with di-2-hydroxyalkylamine or morpholine. In addition to imparting tack to the elastomer, the tackifier of this invention does not interfere with but tends to enhance the development of adhesion of the elastomer to reinforcing fibers.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: March 27, 1979
    Assignee: Ashland Oil, Inc.
    Inventors: Elsworth J. Weaver, James N. Mitchell