Patents by Inventor Tadamitsu Hamasaki

Tadamitsu Hamasaki 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 producing .alpha.-olefin polymers
    Patent number: 4403081
    Abstract: A method for producing .alpha.-olefin polymers is provided. This method provides products having superior properties such as higher bulk density and uniform particle form which is close to sphere, with such an extremely higher catalyst efficiency that ash-removal step can be omitted without fear of coloring.
    Type: Grant
    Filed: February 21, 1979
    Date of Patent: September 6, 1983
    Assignee: Chisso Corporation
    Inventors: Masato Harada, Akihiro Sato, Sadahiko Yamada, Kazutsune Kikuta, Atsushi Suzuki, Hiroshi Shimizu, Jun Masuda, Tadamitsu Hamasaki, Atsuyuki Kachi