Patents by Inventor Mitsuo Onozuka

Mitsuo Onozuka 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).

  • Stretched molding composed of calcium sulfite-containing polyethylene composition and a process for the preparation thereof
    Patent number: 4124563
    Abstract: A pervious sheet of a polyolefin composition containing 50-85 wt.% of an inorganic material such as calcium sulfite is disclosed. The calcium sulfite is preferably employed in the form of the crystalline semi-hydrate, with the crystals being in the rectangular form having a short axis of 1-30 .mu. and a long axis of 5-100 .mu.. Also disclosed is a method for the manufacture of these compositions.
    Type: Grant
    Filed: February 14, 1977
    Date of Patent: November 7, 1978
    Assignee: Kureha Kagaku Kogyo Kubushiki Kaisha
    Inventors: Mitsuo Onozuka, Koki Nomoto, Kiichi Endo
  • Dorno ray transmitting sheet
    Patent number: 4011874
    Abstract: A melt-molded polyvinylidene fluoride or polymonochlorotrifluoroethylene sheet having a thickness of about 20 .mu. to 2 mm and a spherulite size of less than about 10 .mu., whereby the sheet transmits more than about 40% of the dorno rays in a wavelength region of about 2,800 to 3,300 A, and a sun room using as a light admitting plate a sheet or plate of the polyvinylidene fluoride or the polymonochlorotrifluoroethylene permitting transmission of the physiologically active rays in sunlight.
    Type: Grant
    Filed: June 17, 1974
    Date of Patent: March 15, 1977
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masahiro Segawa, Mitsuo Onozuka, Ichiroh Ishibashi, Shinsuke Yoshikawa, Shigeru Saitoh
  • Anti-fouling composition for use in water comprising a polymer and an organo tin compound
    Patent number: 4010141
    Abstract: In an article to be used in or under water and in constant contact with the water, at least the surface of the article is composed of an anti-fouling composition which comprises a polymer and an organo tin compound of the formula: ##STR1## wherein R.sub.1 is n-dodecyl and R.sub.2 and R.sub.3 are methyl. X is defined in the specification.
    Type: Grant
    Filed: January 10, 1975
    Date of Patent: March 1, 1977
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Mitsuo Onozuka, Yasuo Hayashi, Yoshiaki Adachi
  • Stress-sensitive composition
    Patent number: 3937682
    Abstract: A composition for forming into a soft, pliable, leather-like material includes a polyolefine having from 50 to 90 weight percent of inorganic compounds. The inorganic compounds contain a substantial amount of calcium sulfite having crystal sizes of 1-100 .mu..
    Type: Grant
    Filed: October 30, 1974
    Date of Patent: February 10, 1976
    Assignee: Kureha Kagaku Kogyo Kabushiki Kaisha
    Inventors: Mitsuo Onozuka, Koki Nomoto, Koji Sato