Patents by Inventor Michael J. Trojan

Michael J. Trojan 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).

  • Rubber compositions containing high purity lignin derivatives
    Patent number: 5196460
    Abstract: A tackifier composition for use in rubber compounds is disclosed. The tackifier comprises a pure lignin with a water solubility of up to 1% by weight and a carbohydrate level of less than 50% by weight. In another embodiment of the invention, the pure lignin functions as both a tackifier and an antioxidant. In yet another preferred embodiment of the invention, the improved tackifier produces synergistic results when blended with a commercial tackifier, and the antioxidant likewise yields synergistic results when mixed with a commercial antioxidant.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: March 23, 1993
    Assignee: Repap Technologies Inc.
    Inventors: Jairo H. Lora, Michael J. Trojan, William H. Klingensmith