Patents by Inventor Hans R. Widmer

Hans R. Widmer 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).

  • Thermosetting powder lacquer for covering weld seams
    Patent number: 4604308
    Abstract: The thermosetting powder lacquer is suited for covering the weld seams in metal containers for foodstuffs or beverages and comprises a mixture of at least two aromatic epoxide resins, a first component of which contains a maximum of two epoxide groups per molecule on the average and a second component of which contains more than two epoxide groups per molecule on the average, a hardener and a catalyst. As a hardener there is used a condensation product formed from the diglycidylether of bisphenol-A and bisphenol-A and as a catalyst dimethylaminophenol is used.
    Type: Grant
    Filed: August 7, 1985
    Date of Patent: August 5, 1986
    Assignee: Vernicolor AG
    Inventors: Hans R. Widmer, Christian Schmid
  • Thermosetting powder lacquer for covering weld seams
    Patent number: 4549000
    Abstract: The thermosetting powder lacquer is suited for covering the weld seams in metal containers for foodstuffs or beverages and comprises a mixture of at least two aromatic epoxide resins, a first component of which contains a maximum of two epoxide groups per molecule on the average and a second component of which contains more than two epoxide groups per molecule on the average, a hardener and a catalyst. As a hardener there is used a condensation product formed from the diglycidylether of bisphenol-A and bisphenol-A and as a catalyst dimethylaminophenol is used.
    Type: Grant
    Filed: March 5, 1984
    Date of Patent: October 22, 1985
    Assignee: Vernicolor AG
    Inventors: Hans R. Widmer, Christian Schmid