Patents by Inventor Kunio Obara

Kunio Obara 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: 4274874
    Abstract: A copper-tin type sintered alloy for an oil-impregnated bearing excellent in bearing performance particularly as a bearing used in low-load and high-velocity region, having a chemical composition consisting essentially of, in weight percentage:______________________________________ Tin from 8 to 11% Phosphorus from 0.2 to 1.7% ______________________________________at least one solid lubricant, having an average particle size of from 20 to 80 .mu.m, selected from the group consisting of: ______________________________________ Molybdenum disulfide from 1.1 to 11%, and Tungsten disulfide from 1.7 to 17%, ______________________________________Where,the total amount of molybdenum disulfide and tungsten disulfide being up to 17%;and,the balance copper and incidental impurities;said sintered alloy being prepared by sintering a green compact having said chemical composition at a temperature of from 650.degree. to 750.degree. C.
    Type: Grant
    Filed: September 21, 1979
    Date of Patent: June 23, 1981
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Kunio Obara, Tohru Kohno, Hiroshi Sawaguchi
  • Patent number: 4014290
    Abstract: Spray apparatus for coating bottles with resin except on their bottoms, for the purpose of preventing the explosion of the bottles. In order to prevent adhesion of the resin to the bottom, bottles are suspended and moved in a row and a belt is provided to move together with the suspended bottles below and near their bottoms and at the same speed as the bottles.
    Type: Grant
    Filed: February 27, 1974
    Date of Patent: March 29, 1977
    Assignee: Mitsui Shipbuilding and Engineering Co., Ltd.
    Inventors: Kunio Obara, Masaru Sanda
  • Patent number: 3950166
    Abstract: A sintered article of a titanium alloy is produced by powder metallurgy techniques, the alloy having uniform structure, and improved mechanical properties, machinability and weldability.
    Type: Grant
    Filed: January 30, 1974
    Date of Patent: April 13, 1976
    Assignee: Mitsubishi Metal Corporation
    Inventors: Kunio Obara, Yoshio Nishino, Shoji Matsumoto