Patents by Inventor Kunio Iwamoto

Kunio Iwamoto 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: 6021812
    Abstract: In a ball plug valve (10 ) which has a main opening (14 ) and an auxiliary opening (14 ) A serving as the inlet openings of a flow through hole (13 ) of a ball (12 ) and which has a sectorial opening (15 ) serving as an outlet opening thereof; it is set so that a tip (15 ) A of the sectorial opening (15 ) is in a first sealing region (17 ) A provided by an outlet sealing member near an outlet passage when the valve is fully closed, while the tip (15 ) A of the sectorial opening (15 ) passes across the outlet passage and enters a second sealing region (17 ) B provided by an outlet sealing member when the valve is fully opened.
    Type: Grant
    Filed: June 1, 1998
    Date of Patent: February 8, 2000
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha & Ichinose Co., Ltd.
    Inventors: Kunio Iwamoto, Tadashi Ogawa, Hitoshi Ishiyama, Hideki Wakahara
  • Patent number: 5269950
    Abstract: Textile treating compositions, comprising at least one metal- or silicon-containing organic compound selected from the group consisting of: 1) an organic titanate containing a phosphorus, sulphur or nitrogen atom, 2) a phosphorodithioate metal salt, 3) a dithiocarbamate metal salt, 4) an aluminum alcoholate, an aluminium ester or an aluminum chelate, 5) a tin-containing carboxylate salt or carboxylate ester and 6) a mercapto group-containing silane compound, are effective for preventing yarn breaking and for improving operation efficiency even at severe conditions and are praticularly useful for treating tire cord.
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: December 14, 1993
    Assignee: Sanyo Chemical Industries, Ltd.
    Inventors: Kunio Iwamoto, Makoto Inui, Masaki Iwafuji, Kazuya Ohtani, Ryoichi Fukui