Patents by Inventor Naoteru Ohtani

Naoteru Ohtani 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).

  • Hydraulic cement composition
    Patent number: 4073658
    Abstract: A hydraulic cement composition containing a hydrogenation product of an oligosaccharide, such as a hydrolyzate of starch, cellulose or hemicellulose, having an average molecular weight of 300 to 3,500, as an agent for improving the properties of the cement.
    Type: Grant
    Filed: January 26, 1977
    Date of Patent: February 14, 1978
    Assignee: Kao Soap Co., Ltd.
    Inventors: Naoteru Ohtani, Tutomu Koyama, Takashi Takeuchi, Toshihiro Azuma, Morio Matsuda