Patents by Inventor Gerald E. Schumacher

Gerald E. Schumacher 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).

  • Method for obtaining adhesion of urethane sealant to a painted or glass surface
    Patent number: 4857366
    Abstract: A method is disclosed for treatment of a painted or a glass surface providing improved adhesion of a urethane sealant applied thereafter, comprising applying a solution containing p-toluenesulfonic acid, optionally an organofunctional silane, and an appropriate solvent to the painted or the glass surface, the painted surface being cured and devoid of a resin coating, and thereafter contacting the painted or the glass surface with the urethane sealant. A method for joining painted and glass surfaces using a urethane sealant is also disclosed. Compositions useful within these methods are also described.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: August 15, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Gerald E. Schumacher