Patents by Inventor Mitsuyosi Miyutani

Mitsuyosi Miyutani 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).

  • Tobacco smoke filter
    Patent number: 4619279
    Abstract: A tobacco smoke filter for use suitable in cigarettes comprising cellulose acetate filaments which have a C-shaped cross section. Such filter shows a good filtration performance with less impairment of the tobacco taste or flavor.
    Type: Grant
    Filed: February 1, 1983
    Date of Patent: October 28, 1986
    Assignee: Daicel Chemical Industries Ltd.
    Inventors: Makoto Shiga, Akira Miyazawa, Mitsuyosi Miyutani