Patents by Inventor Tetuji Maruno

Tetuji Maruno 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).

  • Composite substance containing metal particles, conductive paste and manufacturing method thereof
    Patent number: 7001539
    Abstract: A composite substance for forming a conductive paste, comprises a solvent being compatible with an organic component included in the conductive paste, and metal particles wetted by the solvent. The conductive paste comprises an organic binder, the composite substance and an organic solvent mixed with the organic binder and the composite substance. The method for manufacturing the composite substance comprises the step of adding the solvent to undried metal particles having been washed with water, the solvent being compatible with the organic binder included in the conductive paste and incompatible with water so that the water is replaced by the solvent. The method for manufacturing the conductive paste comprises the step of mixing an organic binder and an organic solvent with the composite substance.
    Type: Grant
    Filed: June 13, 2001
    Date of Patent: February 21, 2006
    Assignee: TDK Corporation
    Inventors: Kazuhiko Oda, Tetuji Maruno, Kouji Tanaka, Akira Sasaki
  • Process for producing a ceramic electronic component
    Patent number: 6729003
    Abstract: A process of producing a ceramic electronic component comprises external electrodes having first electrode layers containing at least a noble metal, cuprous oxide, and glass ingredient electrically connected to internal electrodes comprising a noble metal. As the ceramic electronic components, for example, a multi-layer ceramic capacitor, multi-layer varistor, multi-layer dielectric resonator, multi-layer piezoelectric element, etc. may be mentioned.
    Type: Grant
    Filed: November 8, 2001
    Date of Patent: May 4, 2004
    Assignee: TDK Corporation
    Inventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
  • Ceramic electronic component having electronic component containing cuprous oxide
    Patent number: 6381118
    Abstract: A ceramic electronic component comprising external electrodes having first electrode layers containing at least a noble metal, cuprous oxide, and glass ingredient electrically connected to internal electrodes having a noble metal. As the ceramic electronic components, for example, a multi-layer ceramic capacitor, multi-layer varistor, multi-layer dielectric resonator, multi-layer piezoelectric element, etc. may be mentioned.
    Type: Grant
    Filed: July 18, 2000
    Date of Patent: April 30, 2002
    Assignee: TDK Corporation
    Inventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
  • Ceramic electronic component and process for production of the same
    Publication number: 20020046861
    Abstract: A ceramic electronic component comprising external electrodes having first electrode layers containing at least a noble metal, cuprous oxide, and glass ingredient electrically connected to internal electrodes comprising a noble metal. As the ceramic electronic components, for example, a multi-layer ceramic capacitor, multi-layer varistor, multi-layer dielectric resonator, multi-layer piezoelectric element, etc. may be mentioned.
    Type: Application
    Filed: November 8, 2001
    Publication date: April 25, 2002
    Applicant: TDK CORPORATION
    Inventors: Hideki Yokoyama, Takaya Ishigaki, Akira Sasaki, Shintarou Kon, Tetuji Maruno
  • Composite substance containing metal particles, conductive paste and manufacturing method thereof
    Publication number: 20020015832
    Abstract: A composite substance for forming a conductive paste, comprises a solvent being compatible with an organic component included in the conductive paste, and metal particles wetted by the solvent. The conductive paste comprises an organic binder, the composite substance and an organic solvent mixed with the organic binder and the composite substance. The method for manufacturing the composite substance comprises the step of adding the solvent to undried metal particles having been washed with water, the solvent being compatible with the organic binder included in the conductive paste and incompatible with water so that the water is replaced by the solvent. The method for manufacturing the conductive paste comprises the step of mixing an organic binder and an organic solvent with the composite substance.
    Type: Application
    Filed: June 13, 2001
    Publication date: February 7, 2002
    Applicant: TDK Corporation
    Inventors: Kazuhiko Oda, Tetuji Maruno, Kouji Tanaka, Akira Sasaki
  • Chip-type multilayer electronic part
    Patent number: 6342732
    Abstract: A chip-type multi-layered electronic part in which terminal electrodes are prevented from oxidization when the electrical part is joined with a substrate, so that superior electrical bonding between the terminal electrodes and internal electrodes can be attained. Terminal electrodes 7 connected to internal electrodes 1 contain silver and palladium as the main ingredients in the weight ratio in a range of from 7:3 to 3:7, and further contain boron in a range of from 0.1 weight percent to 1.0 weight percent added to the main ingredients of 100 weight percent.
    Type: Grant
    Filed: September 15, 1999
    Date of Patent: January 29, 2002
    Assignee: TDK Corporation
    Inventors: Toshiaki Ochiai, Tetuji Maruno, Akira Sasaki, Kazuhiko Kikuchi