Patents by Inventor Hirotsugu Masubayashi

Hirotsugu Masubayashi 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).

  • Bag for cultivating mushrooms
    Patent number: 4311477
    Abstract: A bag for cultivating mushrooms constructed at least in part from a microporous film which has gas-permeability but does not pass bacteria and infectious microbes.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: January 19, 1982
    Assignee: Polyplastics Company, Ltd.
    Inventors: Ryutaro Kitamura, Hirotsugu Masubayashi