Patents by Inventor Yoshinori Chosakon

Yoshinori Chosakon 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 agglomerating powder
    Patent number: 5373054
    Abstract: A process for agglomerating a polymer powder which comprises mixing a polymer powder with an oxyalkylene group-containing polyvinyl alcohol resin in the presence of water and drying the resulting mixture. According to the process of the present invention, it is possible to easily prepare the polymer granules having little fine powder, a narrow particle size distribution and a large average particle size.
    Type: Grant
    Filed: December 9, 1992
    Date of Patent: December 13, 1994
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Shinji Sanuki, Yoshinori Chosakon, Tsukasa Oishi
  • Process for preparing acetic acid esters
    Patent number: 4405808
    Abstract: A process for preparing acetic acid ester by reacting acetic acid with an aliphatic lower olefin in vapor phase in the presence of steam and a catalyst selected from aromatic disulfonic acids and their esters. The high activity of the catalyst can be maintained and the product is obtained in a high space time yield by the presence of steam in the reaction. The effect of maintaining the high activity can be further increased by using silica treated with a strong acid as a carrier.
    Type: Grant
    Filed: April 20, 1982
    Date of Patent: September 20, 1983
    Assignee: Nippon Gohsei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Kazuhisa Nakajima, Masahiko Miyashita, Susumu Hakozaki, Yoshinori Chosakon