Patents by Inventor Akira Ohkubo

Akira Ohkubo 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: 5392019
    Abstract: An inductance device which has a structure wherein insulating layers and coil conductors are alternately laminated and the coil conductors are electrically connected with one another. For example, insulating sheets each of which has a coil conductor thereon and insulating sheets each of which has a guard electrode thereon are alternately laminated. In the laminate state, the coil conductors are serially connected by through holes made in the insulating sheets, and thus a coil is formed. There is provided a guard electrode between two adjacent coil conductors, and the guard electrode electrically shields the coil conductors from each other.
    Type: Grant
    Filed: November 24, 1992
    Date of Patent: February 21, 1995
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Akira Ohkubo
  • Patent number: 4469801
    Abstract: Titanium-containing silicon nitride film bodies include a film body having an essentially amorphous structure and containing particle-like titanium nitride, a film body consisting mainly of .alpha.-type crystal and containing particle-like TiN deposited in the crystal and having a crystal orientation of crystal face (OOl), and a film body consisting mainly of .beta.-type crystal and containing column-like TiN deposited in the crystal along the c-axis direction thereof and having a crystal orientation of crystal face (OOl), which are produced by blowing a nitrogen depositing source, a silicon depositing source and a titanium depositing source on a substrate heated at 500.degree.-1,900.degree. C. by means of a blowpipe composed of a pipe assembly to perform chemical vapordeposition reaction.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: September 4, 1984
    Assignees: Toshio Hirai, Shinsuke Hayashi
    Inventors: Toshio Hirai, Shinsuke Hayashi, Akira Ohkubo
  • Patent number: 4460743
    Abstract: A composition comprising a polyphenylene ether, a polystyrene, a polyphenylene ether-grafted polyolefin and, optionally, a polystyrene-grafted polyolefin is disclosed. This composition has excellent impact resistance and, due to dispersion phase being a crystalline resin, an excellent rigidity.
    Type: Grant
    Filed: December 28, 1982
    Date of Patent: July 17, 1984
    Assignee: Mitsubishi Petrochemical Co., Ltd.
    Inventors: Katsuhiro Abe, Shin-ichi Yamauchi, Akira Ohkubo