Patents by Inventor Haruo Hattori

Haruo Hattori 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).

  • Method of producing a slurry of microcapsules
    Patent number: 4957666
    Abstract: An improved in-situ polymerization method is provided for easily producing a good slurry of strong, dense, water-resistant and anti-hygroscopic microcapsules made of an amino resin of either of melamine-formaldehyde series or the ureaformaldehyde series, in a high concentration of microcapsules, and a low viscosity.
    Type: Grant
    Filed: September 13, 1988
    Date of Patent: September 18, 1990
    Assignees: Taio Paper Manufacturing Co., Ltd., Showa High Polymer Co., Ltd.
    Inventors: Michio Kawamura, Yasunori Shimada, Koichi Inoshita, Shozo Yoshida, Toshiaki Kawanabe, Haruo Hattori, Yukio Doi, Mamoru Awano