Patents by Inventor Leo G. J. E. Marien

Leo G. J. E. Marien 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).

  • Electric reflector lamp having a bearing plate and a cement mount
    Patent number: 5698936
    Abstract: The electric reflector lamp has a light source in an envelope with a seal. The seal has a projection against which a plate rests, the plate having a side which faces the light source. The seal is secured in the neck of a reflector body by means of cement which is present at a side of the plate which faces away from the light source. Thereby, an open passage to the beam-shaping portion of the reflector body exists allowing volatile substances released by the cement to escape when the reflector body is closed by means of a cover.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: December 16, 1997
    Assignee: U.S. Philips Corporation
    Inventors: Leo G. J. E. Marien, Franciscus H. Van Lierop