Patents by Inventor Wilhelmus Jozefus L. A. Hamersma

Wilhelmus Jozefus L. A. Hamersma 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).

  • Polymer mixture comprising polybutylene terephthalate, aromatic polycarbonate and polydialkysiloxane
    Patent number: 4942188
    Abstract: The invention relates to polymer mixtures which comprise a polybutylene terephthalate, an aromatic polycarbonate, and a dialkyl silicone fluid. Due to the presence of the dialkyl silicone fluid compound a good lacquer bonding is obtained.
    Type: Grant
    Filed: November 9, 1988
    Date of Patent: July 17, 1990
    Assignee: General Electric Company
    Inventors: Wilhelmus Jozefus L. A. Hamersma, Jan de Boer, Wilhelmus M. M. Roovers, Gerrit de Wit