Patents by Inventor Michitaka Tsutome

Michitaka Tsutome 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).

  • Fluorophosphate-base laser glasses
    Patent number: 4120814
    Abstract: A fluorophosphate-base laser glass having a low non-linear refractive index coefficient and a low liquid phase temperature and comprising a glass composed of 5 to 25% 1/2P.sub.2 O.sub.5 and the remainder of metal fluorides and 0.01 to 3% 1/2Nd.sub.2 O.sub.3 being incorporated into the glass, and more particularly a fluorophosphate-base laser glass comprising 5 to 25% 1/2P.sub.2 O.sub.5, 20 to 35% AlF.sub.3, 0 to 5% YF.sub.3, 22 to 55% BaF.sub.2 +SrF.sub.2 +CaF.sub.2 +MgF.sub.2, 0 to 25% NaF+LiF+KF and 0.01 to 3% 1/2Nd.sub.2 O.sub.3, all % being cationic %.
    Type: Grant
    Filed: July 27, 1977
    Date of Patent: October 17, 1978
    Assignee: Hoya Corporation
    Inventors: Tetsuro Izumitani, Michitaka Tsutome