Patents by Inventor Kazuhiko Akutagawa

Kazuhiko Akutagawa 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).

  • Process for producing expanded tobacco stems
    Patent number: 4211243
    Abstract: Expanded porous tobacco stems with a low apparent density and an excellent quality of smoking taste are obtained by heating under a pressurized atmosphere tobacco stems separated from tobacco leaves, as such or after moisturization, at a temperature of 150.degree. to 300.degree. C. and a pressure of 3 kg/cm.sup.2 (gage) or more in the presence of superheated steam for a period of 30 seconds or less and suddenly releasing the pressure to effect expansion of the stems. The resulting expanded stems are shredded into cut tobacco stems or made into reconstituted tobacco sheet to provide a tobacco material of excellent filling capacity.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: July 8, 1980
    Assignees: Kikkoman Shoyu Co., Ltd., The Japan Tobacco & Salt Public Corporation
    Inventors: Masayuki Ohno, Kazuhiko Akutagawa, Hiroo Inui, Yoshihiko Nishizawa, Naoshi Tsukada, Takeshi Akao