Patents by Inventor Tsuyoshi Saitoh

Tsuyoshi Saitoh 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).

  • Estradiol derivative-alkylating agent conjugate with reduced hormonal activity, process for preparing the same, compounds useful for the preparation thereof, and growth inhibiting composition containing the conjugate or estradiol derivative
    Patent number: 5478818
    Abstract: Disclosed is an estradiol derivative-alkylating agent conjugate of the formula (I'): ##STR1## wherein R.sup.1 is C.sub.1-4 alkyl or C.sub.1-4 alkoxy; R.sup.2 is acyl or benzyl; m is an integer of 1 to 3; and n is an integer of 0 to 3, which is useful a growth inhibiting agent.
    Type: Grant
    Filed: September 26, 1994
    Date of Patent: December 26, 1995
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Koichi Niimura, Takako Kawabe, Tsutomu Wada, Tsuyoshi Saitoh, Kenji Bannai
  • Handling apparatus for ceramic green sheet
    Patent number: 5466330
    Abstract: Before ceramic green sheets formed on carrier films, which are prepared for manufacturing a ceramic multilayer circuit board, are stacked with each other, each carrier film is separated from each ceramic green sheet, which is maintained in a state being attracted by an attracting head. This separation is rendered to gradually extend over the entire region from an end of the ceramic green sheet.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: November 14, 1995
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Norio Sakai, Tsuyoshi Saitoh, Yoshikatsu Nakayama, Akihiko Kamada
  • Method of manufacturing cavitied ceramic multilayer block
    Patent number: 5435875
    Abstract: When a plurality of ceramic green sheets provided with cavity holes are respectively pressed by an elastic member, rigid plates which are sized to be in contact with overall major surfaces of the respective ceramic green sheets and provided with holes equivalent to or slightly smaller than the cavity holes are interposed between the elastic member and the respective ceramic green sheets. Thus, the cavity holes are inhibited from undesired deformation caused by deformation of the elastic member.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: July 25, 1995
    Assignee: Murata Mfg. Co., Ltd.
    Inventors: Tsuyoshi Saitoh, Shoichi Kawabata, Norio Sakai