Patents by Inventor Takeo Emoto

Takeo Emoto 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).

  • Granular p-phenylenediamine color developing agent
    Patent number: 3981732
    Abstract: A process for preparing a granular color developing agent, which comprises kneading a mixture of at least one excipient selected from the group consisting of water and lower alcohols and a p-phenylenediamine color developing agent, and granulating the mixture is disclosed.
    Type: Grant
    Filed: April 9, 1974
    Date of Patent: September 21, 1976
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Takeo Emoto, Satoshi Kurihara