Patents by Inventor Osaku Matsuda

Osaku Matsuda 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).

  • Alkali-resistant glass compositions
    Patent number: 4095986
    Abstract: An alkali-resistant glass composition which comprises 40 - 55% by weight of iO.sub.2, 6 - 12% by weight of Al.sub.2 O.sub.3, 8 - 30% by weight of CaO, 3 - 6% by weight of an alkali metal oxide of Na.sub.2 O and/or K.sub.2 O, 3 - 10%, by weight of ZrO.sub.2 and 2 - 20% by weight of ZnO together with or without 2 - 7% by weight of Fe.sub.2 O.sub.3. This glass composition has especially remarkable alkali-resistance and is excellent in fusibility, workability, spinnability and devitrification-resistance.
    Type: Grant
    Filed: August 27, 1976
    Date of Patent: June 20, 1978
    Assignee: Director-General of the Agency of Industrial Science and Technology
    Inventors: Osaku Matsuda, Kouzo Inoue, Shuji Tsunematsu