Patents by Inventor Takafumi Turumaru

Takafumi Turumaru 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).

  • Contact heating device
    Patent number: 6414271
    Abstract: There is provided a bonding heater used to package a semiconductor chip on a multilayer substrate, which has adaptability to various chip sizes, with an excellent maintenance characteristics, with undesirable displacement of the chip at the time of mounting a semiconductor chip being made as small as possible and also with a temperature rise time to a desired temperature being shortened. This bonding heater is constituted by a ceramic tool for pressing an object to be heated, a ceramic heater for heating the tool, a heat insulating member for transferring heat generated by the ceramic heater mainly to the tool side and a holder for integrating these members and connecting these members to another member, and the tool, ceramic heater, heat insulating member and holder are detachably bonded.
    Type: Grant
    Filed: May 22, 2001
    Date of Patent: July 2, 2002
    Assignee: Kyocera Corporation
    Inventors: Kiyoshi Yokoyama, Takafumi Turumaru, Hiroyuki Arima, Hideaki Shimozuru
  • Contact heating device
    Publication number: 20020003137
    Abstract: There is provided a bonding heater used to package a semiconductor chip on a multilayer substrate, which has adaptability to various chip sizes, with an excellent maintenance characteristics, with undesirable displacement of the chip at the time of mounting a semiconductor chip being made as small as possible and also with a temperature rise time to a desired temperature being shortened. This bonding heater is constituted by a ceramic tool for pressing an object to be heated, a ceramic heater for heating the tool, a heat insulating member for transferring heat generated by the ceramic heater mainly to the tool side and a holder for integrating these members and connecting these members to another member, and the tool, ceramic heater, heat insulating member and holder are detachably bonded.
    Type: Application
    Filed: May 22, 2001
    Publication date: January 10, 2002
    Applicant: KYOCERA CORPORATION
    Inventors: Kiyoshi Yokoyama, Takafumi Turumaru, Hiroyuki Arima, Hideaki Shimozuru
  • Rotor for open-end spinning machine
    Patent number: 5842337
    Abstract: A rotor for an open-end spinning machine. A spinning portion of a bottomed cylindrical body has a hollow portion where twisted yarn is formed by a continuous twisting operation while gathering short fiber groups in the maximum diameter portion of the spinning chamber. A rotary shaft is joined to the spinning portion. The spinning portion is made of a silicon nitride sintered body which includes no less than 60% silicon nitride grain having an aspect ratio not less than 3, and an average grain size of from 0.1 to 10 .mu.m. The rotor is hardly damaged at a high speed rotation of 100,000 r.p.m. or more, and the yarn strength and the yarn quality are not reduced even after an extended use of the rotor for a long time.
    Type: Grant
    Filed: September 24, 1996
    Date of Patent: December 1, 1998
    Assignee: Kyocera Corporation
    Inventors: Masatoshi Ikeda, Hironori Inoue, Takafumi Turumaru, Zenpei Tachibana