Patents by Inventor Akio Dobashi

Akio Dobashi 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).

  • Pulping process
    Patent number: 4851082
    Abstract: A process for the production of a pulp from bast fibers, which includes reacting a mixture of the bast fibers and an aqueous digestion liquid at a temperature of 60.degree.-130.degree. C. The digestion liquid includes (a) hydrogen peroxide or a compound capable of generating hydrogen peroxide in the presence of water, (b) an alkali metal carbonate, and (c) an oxalate.
    Type: Grant
    Filed: February 22, 1988
    Date of Patent: July 25, 1989
    Assignee: Director General of Agency of Industrial Science and Technology
    Inventors: Akio Mita, Akio Dobashi, Susumu Kashiwabara