Patents by Inventor Takawo Ohtsu

Takawo Ohtsu 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).

  • Sterilizing process
    Patent number: 4661126
    Abstract: Feed and/or exhaust air can be readily and effectively sterilized by passing said air through a high-temperature filter equipped with built-in heat-retaining material, which process is available in air supply and/or exhaust systems of, e.g., culture equipment for microorganisms and clean rooms in hospitals.
    Type: Grant
    Filed: December 5, 1985
    Date of Patent: April 28, 1987
    Assignees: The Calpis Food Industry Co., Ltd., JGC Corporation
    Inventors: Kaoru Inagami, Takawo Ohtsu