Patents by Inventor Jyuniti Kosugi

Jyuniti Kosugi 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 for the production of alpha type calcium sulfate hemihydrate
    Patent number: 4091080
    Abstract: Alpha type calcium sulfate hemihydrate gypsum is obtained by suspending gypsum in an aqueous solution containing a specific monocarboxylate in a specific concentration and heating the resultant suspension in a specific temperature range under atmospheric pressure. The production of this alpha type calcium sulfate hemihydrate is accomplished at an increased rate by adding a specific monocarboxylic acid to the aqueous solution, suspending gypsum in the resultant solution and heating the resultant suspension in a specific temperature range under atmospheric pressure.
    Type: Grant
    Filed: October 14, 1976
    Date of Patent: May 23, 1978
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Jyuniti Kosugi, Yoshihiko Kudo, Kiyoshi Tagaya