Patents by Inventor Bernt D. Hoppert

Bernt D. Hoppert 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).

  • Enhanced metal filter/mirror coatings for use on engineering plastics
    Patent number: 5169229
    Abstract: A device which controls the reflected spectrum of a light source comprised of: a support article made of a plastic which is stable to the temperatures required of such a device; an optical coating deposited upon said support article, said coating consisting essentially of: a highly reflective metal film directly deposited upon said plastic support article and is at least 50 nm in thickness; an array of thin films of alternating high index and low index dielectric materials deposited upon said thin highly reflective metal film, said array being chosen to control the reflected spectrum of said device.
    Type: Grant
    Filed: January 9, 1990
    Date of Patent: December 8, 1992
    Assignee: Bausch & Lomb Incorporated
    Inventors: Bernt D. Hoppert, Douglas J. LaPlante