Patents by Inventor Marie Helene Guignard

Marie Helene Guignard 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).

  • GLASSES HAVING A REDUCED STRESS-OPTIC COEFFICIENT
    Publication number: 20100029459
    Abstract: The present invention provides novel glasses, methods of formulating glasses having a reduced stress-optic coefficient at visible wavelengths under anisotropic stress, and novel optical systems comprising a such glass.
    Type: Application
    Filed: July 26, 2007
    Publication date: February 4, 2010
    Inventors: Josef Wilson Zwanziger, Marie Helene Guignard