Patents by Inventor Norio Shimakura

Norio Shimakura 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 preparing ethylenic polymer composition
    Patent number: 5494982
    Abstract: A process for the preparation of an ethylenic polymer composition having excellent physical properties such as high impact properties, environmental stress cracking resistance, pinch-off fusing characteristics and having an intrinsic viscosity ranging from 3.2 to 4.5 dl/g and a density ranging from 0.943 g/cm.sup.3 to 0.958 g/cm.sup.3.
    Type: Grant
    Filed: August 22, 1994
    Date of Patent: February 27, 1996
    Assignee: Idemitsu Petrochemical Company, Limited
    Inventors: Kenji Nakacho, Norio Shimakura, Tsutomu Akimaru, Tsuyoshi Ohta, Hideo Funabashi, Isamu Yamamoto