Patents by Inventor Souji Matsushita

Souji Matsushita 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).

  • Air-entraining agent for flyash cement composition
    Patent number: 4828619
    Abstract: The invention relates to a composition comprising flyash cement and an air-entraining agent selected from the group consisting of polyoxyethylene polyalcohol fatty acid esters, polyethylene glycol fatty acid esters, polyoxyethylene pentaerythritol fatty acid esters and polyoxyethylene sorbitan fatty acid esters, and a fatty acid or salt thereof.
    Type: Grant
    Filed: February 12, 1988
    Date of Patent: May 9, 1989
    Assignee: Fujisawa Pharmaceutical Co., Ltd.
    Inventors: Souji Matsushita, Setsuro Shimizu, Toru Takeuchi, Susumi Tahara