Patents by Inventor Betty K. Masai

Betty K. Masai 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).

  • Patent number: D273968
    Type: Grant
    Filed: February 16, 1982
    Date of Patent: May 22, 1984
    Assignee: Masai and Watanabe
    Inventors: Betty K. Masai, Chikako Watanabe