Patents by Inventor Ryoji Nishizawa

Ryoji Nishizawa 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).

  • Glass forming lubricant and glass forming method using it
    Patent number: 5865884
    Abstract: A glass forming lubricant comprising an organic titanate or an organic phospherous ester calcium salt as a lubricant agent.
    Type: Grant
    Filed: May 1, 1997
    Date of Patent: February 2, 1999
    Assignees: Asahi Glass Company Ltd., Chukyo Kasei Kogyo Co., Ltd.
    Inventors: Yutaka Segawa, Yukio Morisawa, Ryoji Nishizawa, Norio Doi