Patents by Inventor Toshimoto Makino

Toshimoto Makino 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).

  • High pressure discharge lamp and method of production therefor
    Patent number: 6913503
    Abstract: A high pressure discharge lamp includes a quartz glass bulb and a pair of electrodes. Each electrode of the pair of electrodes is disposed so as to be opposite the other in the quartz glass bulb. The quartz glass bulb of the high pressure discharge lamp contains at least mercury and a halogen gas which are airtightly sealed in the quartz glass bulb. The partial pressure of oxygen (O) in the quartz glass bulb is about 2.5×10?3 Pa or less and the partial pressure of the halogen gas in the quartz glass bulb is in the range between about 1×10?6 ?mol/mm3 and 1×10?8 ?mol/mm3. The pair of electrodes contain potassium oxide in the range between about 20 ppm and 40 ppm.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: July 5, 2005
    Assignee: NEC Microwave Tube, Ltd.
    Inventors: Kazuhisa Nishida, Toshimoto Makino
  • High pressure discharge lamp and method of production therefor
    Publication number: 20030203701
    Abstract: A high pressure discharge lamp includes a quartz glass bulb and a pair of electrodes. Each electrode of the pair of electrodes is disposed so as to be opposite the other in the quartz glass bulb. The quartz glass bulb of the high pressure discharge lamp contains at least mercury and a halogen gas which are airtightly sealed in the quartz glass bulb. The partial pressure of oxygen (O) in the quartz glass bulb is about 2.5×10−3 Pa or less and the partial pressure of the halogen gas in the quartz glass bulb is in the range between about 1×10−6 &mgr;mol/mm3 and 1×10−8 &mgr;mol/mm3. The pair of electrodes contain potassium oxide in the range between about 20 ppm and 40 ppm.
    Type: Application
    Filed: May 23, 2003
    Publication date: October 30, 2003
    Applicant: NEC MICROWAVE TUBE, LTD.
    Inventors: Kazuhisa Nishida, Toshimoto Makino
  • High pressure discharge lamp and method of production therefor
    Patent number: 6608440
    Abstract: A high pressure discharge lamp includes a quartz glass bulb and a pair of electrodes. Each electrode of the pair of electrodes is disposed so as to be opposite the other in the quartz glass bulb. The quartz glass bulb of the high pressure discharge lamp contains at least mercury and a halogen gas which are airtightly sealed in the quartz glass bulb. The partial pressure of oxygen (O) in the quartz glass bulb is about 2.5×10−3 Pa or less and the partial pressure of the halogen gas in the quartz glass bulb is in the range between about 1×10−6 &mgr;mol/mm3 and 1×10−8 &mgr;mol/mm3. The pair of electrodes contain potassium oxide in the range between about 20 ppm and 40 ppm.
    Type: Grant
    Filed: July 5, 2001
    Date of Patent: August 19, 2003
    Assignee: NEC Microwave Tube, Ltd.
    Inventors: Kazuhisa Nishida, Toshimoto Makino
  • High pressure discharge lamp and method of production therefor
    Publication number: 20020017860
    Abstract: A high pressure discharge lamp includes a quartz glass bulb and a pair of electrodes. Each electrode of the pair of electrodes is disposed so as to be opposite the other in the quartz glass bulb. The quartz glass bulb of the high pressure discharge lamp contains at least mercury and a halogen gas which are airtightly sealed in the quartz glass bulb. The partial pressure of oxygen (O) in the quartz glass bulb is about 2.5×10−3 Pa or less and the partial pressure of the halogen gas in the quartz glass bulb is in the range between about 1×10−6 &mgr;mol/mm3 and 1×10−8 &mgr;mol/mm3. The pair of electrodes contain potassium oxide in the range between about 20 ppm and 40 ppm.
    Type: Application
    Filed: July 5, 2001
    Publication date: February 14, 2002
    Applicant: NEC Corporation
    Inventors: Kazuhisa Nishida, Toshimoto Makino