Patents by Inventor Erwin Buchel

Erwin Buchel 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 the production marking of liquid displays
    Patent number: 4177729
    Abstract: A method for the production marking of liquid crystal displays whereby the closure bar of the liquid crystal cell is produced and encoded by a screen printing process. Several coding techniques which minimize production interruptions are also disclosed.
    Type: Grant
    Filed: August 31, 1977
    Date of Patent: December 11, 1979
    Assignee: BBC Brown Boveri & Company, Limited
    Inventors: Erwin Buchel, Ruurd de Fluiter, Peter J. Wild, Jorg Wullschleger