Patents by Inventor Keiichi Kubo

Keiichi Kubo 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).

  • Induction heating device, radioactive waste melting process device equipped with said induction heating device, and radioactive waste melting and solidification process device
    Patent number: 11570856
    Abstract: Provided is an induction heating device with which discharging can be easily avoided even when a large electric current is used. The induction heating device comprises a high-frequency power supply provided with a connection portion for an alternating-current power supply, and a heating coil portion connected to the high-frequency power supply. In the heating coil portion, a plurality of coils include n coils surrounding a cavity portion in a plane, wherein the plurality of coils are mutually connected in series via one of a plurality of capacitors.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: January 31, 2023
    Assignee: DENKI KOGYO COMPANY, LIMITED
    Inventors: Yohei Awata, Keiichi Kubo, Mitsunori Hayashi, Tetsuo Fusato
  • INDUCTION HEATING DEVICE, RADIOACTIVE WASTE MELTING PROCESS DEVICE EQUIPPED WITH SAID INDUCTION HEATING DEVICE, AND RADIOACTIVE WASTE MELTING AND SOLIDIFICATION PROCESS DEVICE
    Publication number: 20210092804
    Abstract: Provided is an induction heating device with which discharging can be easily avoided even when a large electric current is used. The induction heating device comprises a high-frequency power supply provided with a connection portion for an alternating-current power supply, and a heating coil portion connected to the high-frequency power supply. In the heating coil portion, a plurality of coils include n coils surrounding a cavity portion in a plane, wherein the plurality of coils are mutually connected in series via one of a plurality of capacitors.
    Type: Application
    Filed: July 2, 2018
    Publication date: March 25, 2021
    Applicant: DENKI KOGYO COMPANY, LIMITED
    Inventors: Yohei AWATA, Keiichi KUBO, Mitsunori HAYASHI, Tetsuo FUSATO
  • Heat treatment method
    Patent number: 8845831
    Abstract: There is provided a heat treatment method in which high-quality tempering treatment can be performed in a short period of time. In this method, when an object to be treated is tempered after being quenched, the object to be treated is rapidly cooled to a 90% martensite transformation finishing temperature without being cooled to the ordinary temperature after quench heating, and then is subjected to 100% martensite transformation by using a 100° C. liquid, and thereafter, tempering treatment is performed after the whole of the object to be treated is soaked by using the 100° C. liquid.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: September 30, 2014
    Assignee: Denki Kogyo Co., Ltd.
    Inventors: Seiichi Sawatsubashi, Keiichi Kubo
  • Heat treatment method
    Publication number: 20100193091
    Abstract: There is provided a heat treatment method in which high-quality tempering treatment can be performed in a short period of time. In this method, when an object to be treated is tempered after being quenched, the object to be treated is rapidly cooled to a 90% martensite transformation finishing temperature without being cooled to the ordinary temperature after quench heating, and then is subjected to 100% martensite transformation by using a 100° C. liquid, and thereafter, tempering treatment is performed after the whole of the object to be treated is soaked by using the 100 ° C. liquid.
    Type: Application
    Filed: February 2, 2009
    Publication date: August 5, 2010
    Applicant: DENKI KOGYO CO., LTD.
    Inventors: Seiichi Sawatsubashi, Keiichi Kubo