Patents by Inventor Tatsumi Suganuma

Tatsumi Suganuma 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).

  • Patent number: 7478347
    Abstract: A semiconductor manufacturing apparatus having a plurality of portions according to this invention includes a storage device which stores, for each portion, information representing the lapsed time of use or the product processing count till occurrence of a failure after installation of the portion, and a calculation device which receives the information stored in the storage device and outputs function information representing a failure probability and/or failure rate as a function of the lapsed time of use or the product processing count for each portion.
    Type: Grant
    Filed: April 17, 2006
    Date of Patent: January 13, 2009
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiromi Yajima, Tatsumi Suganuma, Noriaki Yoshikawa, Tadashi Yotsumoto, Kenji Nakata
  • Publication number: 20060190120
    Abstract: A semiconductor manufacturing apparatus having a plurality of portions according to this invention includes a storage device which stores, for each portion, information representing the lapsed time of use or the product processing count till occurrence of a failure after installation of the portion, and a calculation device which receives the information stored in the storage device and outputs function information representing a failure probability and/or failure rate as a function of the lapsed time of use or the product processing count for each portion.
    Type: Application
    Filed: April 17, 2006
    Publication date: August 24, 2006
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hiromi Yajima, Tatsumi Suganuma, Noriaki Yoshikawa, Tadashi Yotsumoto, Kenji Nakata
  • Patent number: 7065725
    Abstract: A semiconductor manufacturing apparatus having a plurality of portions according to this invention includes a storage device which stores, for each portion, information representing the lapsed time of use or the product processing count till occurrence of a failure after installation of the portion, and a calculation device which receives the information stored in the storage device and outputs function information representing a failure probability and/or failure rate as a function of the lapsed time of use or the product processing count for each portion.
    Type: Grant
    Filed: March 4, 2003
    Date of Patent: June 20, 2006
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiromi Yajima, Tatsumi Suganuma, Noriaki Yoshikawa, Tadashi Yotsumoto, Kenji Nakata
  • Publication number: 20030171836
    Abstract: A semiconductor manufacturing apparatus having a plurality of portions according to this invention includes a storage device which stores, for each portion, information representing the lapsed time of use or the product processing count till occurrence of a failure after installation of the portion, and a calculation device which receives the information stored in the storage device and outputs function information representing a failure probability and/or failure rate as a function of the lapsed time of use or the product processing count for each portion.
    Type: Application
    Filed: March 4, 2003
    Publication date: September 11, 2003
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hiromi Yajima, Tatsumi Suganuma, Noriaki Yoshikawa, Tadashi Yotsumoto, Kenji Nakata
  • Patent number: 4958712
    Abstract: A wet clutch device for selectively transmitting the rotation of a rotatable pulley to a driven shaft which rotatably supports the pulley. The wet clutch device includes an oil chamber which encloses a predetermined amount of oil and which is defined by the pulley and a cover which is secured to the pulley, driving clutch plates which are axially movably supported by the pulley in the oil chamber, driven clutch plates which are axially movably supported by the driven shaft in the oil chamber to selectively come into engagement with, and disengagement from corresponding driving clutch plates, and actuating device for bringing the driving clutch plates and the driven clutch plates into engagement with each other.
    Type: Grant
    Filed: June 28, 1988
    Date of Patent: September 25, 1990
    Assignee: Taiho Kogyo Co. Ltd.
    Inventors: Tatsumi Suganuma, Shigehiro Nozue, Tatsuhiko Fukuoka, Naoto Noguchi, Akira Takenaka