Patents by Inventor Nobuo Setaka

Nobuo Setaka 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).

  • Method for preparing diamond or diamond-like carbon by combustion flame
    Patent number: 4981671
    Abstract: A method for preparing diamond or diamond-like carbon, which comprises exciting carbon by decomposing, evaporating and dissociating an organic compound or a carbon material in a combustion flame of at least 600.degree. C. of a hydrocarbon, hydrogen or a mixture thereof and oxygen gas or air, mixing thereto hydrogen in an amount of at least one time by volume the amount of carbon, and maintaining the mixture at a temperature of from 600.degree. to 1,700.degree. C. to precipitate diamond or diamond-like carbon.
    Type: Grant
    Filed: February 9, 1989
    Date of Patent: January 1, 1991
    Assignee: National Institute for Research in Inorganic Materials
    Inventors: Yusuke Moriyoshi, Masatsugu Futaki, Seiichiro Matsumoto, Takamasa Ishigaki, Shojiro Komatsu, Nobuo Setaka
  • Process for producing cubic system boron nitride
    Patent number: 4443420
    Abstract: Cubic system boron nitride from rhombohedral system boron nitride is produced by a shock wave compression method. The process comprises applying a thermodynamically stable pressure to rhombohedral system boron nitride to convert it to cubic system boron nitride.
    Type: Grant
    Filed: March 17, 1982
    Date of Patent: April 17, 1984
    Assignee: National Institute for Researches in Inorganic Materials
    Inventors: Tadao Sato, Toshihiko Ishii, Nobuo Setaka
  • Method for synthesizing diamond
    Patent number: 4434188
    Abstract: A method for synthesizing diamond wherein hydrogen gas which has passed through a micro-wave non-electrode discharge and mixed with hydrocarbon gas, or a mixture gas consisting of hydrocarbon and hydrogen after its passing through a micro-wave non-electrode discharge, is introduced onto the surface of a substrate heated to a temperature of from 300.degree. to 1300.degree. C. to decompose hydrocarbon in its energetically activated state for the diamond deposition.
    Type: Grant
    Filed: November 17, 1982
    Date of Patent: February 28, 1984
    Assignee: National Institute for Researches in Inorganic Materials
    Inventors: Mutsukazu Kamo, Seiichiro Matsumoto, Yoichiro Sato, Nobuo Setaka
  • Process for producing diamond powder by shock compression
    Patent number: 4377565
    Abstract: A diamond powder is produced by a shock compressing method using a carbon precursor obtained by an organic compound such as furan resin, its derivative, a thermosettable resin, as a carbon source.
    Type: Grant
    Filed: December 18, 1981
    Date of Patent: March 22, 1983
    Assignee: National Institute for Researches in Inorganic Materials
    Inventor: Nobuo Setaka