Patents by Inventor Takemi Saijo

Takemi Saijo 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).

  • Method for producing glass bubbles
    Patent number: 4693739
    Abstract: A method for producing glass bubbles, which comprises heating a glass powder containing a gas-blowing agent in an atmosphere containing steam having a partial steam pressure of at least 0.2 atmosphere to foam it.
    Type: Grant
    Filed: June 18, 1985
    Date of Patent: September 15, 1987
    Assignee: Nippon Sheet Glass Co., Ltd.
    Inventors: Seiichiro Manabe, Tsutomu Sawano, Takemi Saijo