Patents by Inventor Yasuyosi Kotaka

Yasuyosi Kotaka 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).

  • Stationary process for producing vinegar
    Patent number: 4463019
    Abstract: A process for producing vinegar by stationary acetic acid fermentation which comprises charging the starting mash into a closed type fermentation tank, keeping the oxygen concentration in the gas phase of said fermentation tank so as to fall in a range of 20-60% (V/V), and controlling the fermentation temperature by circulating the gas phase part in said tank outside the tank and controlling its temperature there.
    Type: Grant
    Filed: June 5, 1981
    Date of Patent: July 31, 1984
    Assignee: Kikkoman Corporation
    Inventors: Akira Okuhara, Yasuyosi Kotaka, Masakazu Nishio, Susumu Sato, Isamu Watanabe, Masaru Inoue