Patents by Inventor Hachiro Uchiyama

Hachiro Uchiyama 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).

  • Process for producing cellulose microcapsules, and resulting cellulose microcapsules
    Patent number: 4123381
    Abstract: A cellulose microcapsule having absorbing capacity, consisting of outer semipermeable barrier layer of cellulose and absorbent powders dispersed within inner cellulose gel matrix is prepared by dispersing adsorbent powders in a solution of cellulose dissolved in a solvent which is not adversely affected by the adsorbing capacity of adsorbent powders and capable of dissolving cellulose, then forming the dispersion into droplets and finally precipitating cellulose on the droplets. It is excellent in resistance to chemicals such as acids, alkalis or organic solvents and is useful for various purposes.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: October 31, 1978
    Assignees: Toyo Jozo Company, Ltd., Asahi Kasei Kogyo Kabushiki Kaisha
    Inventors: Masataka Morishita, Mitsuru Fukushima, Tutomu Sasagawa, Yoshihito Inaba, Yasuo Yokokawa, Satoshi Araragi, Narumi Yoshida, Hachiro Uchiyama