Patents by Inventor Yasushi Kawauchi

Yasushi Kawauchi 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).

  • Rubber compound and molded article
    Patent number: 8101674
    Abstract: A pharmaceutical/medical rubber compound contains the following components: (A) a composition obtainable by crosslinking (a) 100 parts by weight of an isobutylene polymer having terminal alkenyl groups with (d) a hydrosilyl-containing compound in the presence of (b) from 5 to 100 parts by weight of a polyolefin and (c) from 5 to 100 parts by weight of polybutene during melt kneading, and (B) an ultra-high molecular weight polyethylene powder. Compared with conventional thermoplastic elastomers, the pharmaceutical/medical rubber compound and its molded article are free from deformations and have sufficient permanent set resistance even under high temperature conditions, have excellent mechanical properties, low water absorption property, low reactivity and superb gas barrier properties, and can withstand high-temperature sterilization.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: January 24, 2012
    Assignee: Daikyo Seiko, Ltd.
    Inventors: Yasushi Kawauchi, Katsuhiko Kimura
  • RUBBER COMPOUND AND MOLDED ARTICLE
    Publication number: 20100197862
    Abstract: A pharmaceutical/medical rubber compound contains the following components: (A) a composition obtainable by crosslinking (a) 100 parts by weight of an isobutylene polymer having terminal alkenyl groups with (d) a hydrosilyl-containing compound in the presence of (b) from 5 to 100 parts by weight of a polyolefin and (c) from 5 to 100 parts by weight of polybutene during melt kneading, and (B) an ultra-high molecular weight polyethylene powder. Compared with conventional thermoplastic elastomers, the pharmaceutical/medical rubber compound and its molded article are free from deformations and have sufficient permanent set resistance even under high temperature conditions, have excellent mechanical properties, low water absorption property, low reactivity and superb gas barrier properties, and can withstand high-temperature sterilization.
    Type: Application
    Filed: June 9, 2008
    Publication date: August 5, 2010
    Inventors: Yasushi Kawauchi, Katsuhiko Kimura
  • Tissue plasminogen activator and process of preparation
    Patent number: 5739012
    Abstract: The present invention relates to improved plasminogen activators (improved t-PA) which have a prolonged biological half life, an increased stability to heat and acids and can be expected to be effective as inhibiting inflammation around the site in which thrombus is formed.
    Type: Grant
    Filed: September 10, 1996
    Date of Patent: April 14, 1998
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yasushi Kawauchi, Toshiyuki Takemoto, Makoto Takayama, Masami Yokota, Masao Kato, Kimio Katsuta
  • Tissue plasminogen activator and method of use
    Patent number: 5556621
    Abstract: The present invention relates to improved plasminogen activators (improved t-PA) which have a prolonged biological half life, an increased stability to heat and acids and can be expected to be effective as inhibiting inflammation around the site in which thrombus is formed.
    Type: Grant
    Filed: May 4, 1994
    Date of Patent: September 17, 1996
    Assignee: Yamanouchi Pharmaceutical Co., Ltd.
    Inventors: Yasushi Kawauchi, Toshiyuki Takemoto, Makoto Takayama, Masami Yokota, Masao Kato, Kimio Katsuta, Hiroshi Gushima