Patents by Inventor Tadaaki Hayashi

Tadaaki Hayashi 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).

  • Semiconductor integrated circuit including a DRAM and an analog circuit
    Patent number: 7361552
    Abstract: A semiconductor device including an interlayer insulation film formed on a substrate so as to cover first and second regions defined on the substrate, and a capacitor formed over the interlayer insulation film in the first region, wherein the interlayer insulation film includes, in the first region, a stepped part defined by a groove having a bottom surface lower in level than a surface of the interlayer insulation film in the second region.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: April 22, 2008
    Assignee: Fujitsu Limited
    Inventors: Tadaaki Hayashi, legal representative, Taiji Ema, Narumi Ohkawa, Masao Hayashi
  • Semiconductor integrated circuit including a DRAM and an analog circuit
    Publication number: 20060275979
    Abstract: A semiconductor device including an interlayer insulation film formed on a substrate so as to cover first and second regions defined on the substrate, and a capacitor formed over the interlayer insulation film in the first region, wherein the interlayer insulation film includes, in the first region, a stepped part defined by a groove having a bottom surface lower in level than a surface of the interlayer insulation film in the second region.
    Type: Application
    Filed: August 15, 2006
    Publication date: December 7, 2006
    Inventors: Maso Hayashi, Tadaaki Hayashi, Taiji Ema, Narumi Ohkawa
  • Semiconductor integrated circuit including a DRAM and an analog circuit
    Patent number: 7118957
    Abstract: A semiconductor device including an interlayer insulation film formed on a substrate so as to cover first and second regions defined on the substrate, and a capacitor formed over the interlayer insulation film in the first region, wherein the interlayer insulation film includes, in the first region, a stepped part defined by a groove having a bottom surface lower in level than a surface of the interlayer insulation film in the second region.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: October 10, 2006
    Assignee: Fujitsu Limited
    Inventors: Tadaaki Hayashi, legal representative, Taiji Ema, Narumi Ohkawa, Masao Hayashi, deceased
  • Semiconductor integrated circuit including a dram and an analog circuit
    Publication number: 20030168686
    Abstract: A semiconductor device includes an interlayer insulation film formed on a substrate so as to cover first and second regions defined on the substrate, and a capacitor formed over the interlayer insulation film in the first region, wherein the interlayer insulation film includes, in the first region, a stepped part defined by a groove having a bottom surface lower in level than a surface of the interlayer insulation film in the second region.
    Type: Application
    Filed: April 10, 2003
    Publication date: September 11, 2003
    Applicant: Fujitsu Limited
    Inventors: Masao Hayashi, Tadaaki Hayashi, Taiji Ema, Narumi Ohkawa
  • Wide-angle optical system for door viewer
    Patent number: 4082434
    Abstract: A wide-angle optical system for a door viewer comprises a concave objective lens of a larger diameter of about 13 to 25 mm which is provided with a convex surface of a large radius of curvature of about 20 to 30 mm at the front surface thereof and with a concave surface of a small radius of curvature of about 4 to 6 mm at the central portion of the rear surface thereof, an intermediate concave lens of a smaller diameter of about 9 to 12 mm which has a concave surface of a small radius of curvature of about 4 to 7 mm provided at the front surface thereof and a convex eyepiece lens of a diameter somewhat smaller than that of the intermediate lens, said eyepiece lens having convex surfaces of a large radius of curvature of about 20 to 30 mm. The intermediate concave lens is positioned so that it contacts at the front surface thereof with the rear surface of the objective lens and so as to align the optical axis thereof with that of the objective lens.
    Type: Grant
    Filed: September 17, 1976
    Date of Patent: April 4, 1978
    Assignee: Kabushiki Kaisha Ka-Pu
    Inventors: Tadaaki Hayashi, Teruto Nakahara
  • Combined display card and holder for a cylindrical article
    Patent number: D243443
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: February 22, 1977
    Inventor: Tadaaki Hayashi