Patents by Inventor Kenji Shirano

Kenji Shirano 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).

  • Multilayered tube for draw molding and multilayered container utilizing the tube
    Patent number: 4810542
    Abstract: The tube of the present invention has no or very small local minute nonuniformity in thickness of EVOH layer, and therefore drawn-formed articles such as blow bottle obtained by draw molding the tube have no streaks and are superior in appearance.
    Type: Grant
    Filed: January 25, 1988
    Date of Patent: March 7, 1989
    Assignee: Kuraray Co., Ltd.
    Inventors: Syuji Kawai, Seio Anzai, Toshinori Ishii, Kenji Shirano, Kunihiko Shimamura, Toshimasa Kanemitsu, Keiji Matsumura
  • Polyester, adhesives comprising the same, and laminates and laminated hollow vessels made thereof
    Patent number: 4504531
    Abstract: An aluminum atom- and monocarboxylic acid residue-containing polyester is provided. Using the polyester as an adhesive or a base, laminates and laminated hollow vessels which comprise, as the constituent elements, the polyester and an ethylene-vinyl alcohol copolymer can be produced. The laminates and laminated hollow vessels are suitable for use as packaging materials or containers for food and drink.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: March 12, 1985
    Assignee: Kuraray Co., Ltd.
    Inventors: Yoshifumi Murata, Keishiro Igi, Hiroshi Narukawa, Masao Uetsuki, Satoshi Bando, Shuji Kawai, Kenji Shirano
  • Polyester, adhesives comprising the same, and laminates and laminated hollow vessels made thereof
    Patent number: 4496714
    Abstract: An aluminum atom- and monocarboxylic acid residue-containing polyester is provided. Using the polyester as an adhesive or a base, laminates and laminated hollow vessels which comprise, as the constituent elements, the polyester and an ethylene-vinyl alcohol copolymer can be produced. The laminates and laminated hollow vessels are suitable for use as packaging materials or containers for food and drink.
    Type: Grant
    Filed: December 15, 1983
    Date of Patent: January 29, 1985
    Assignee: Kuraray Co., Ltd.
    Inventors: Yoshifumi Murata, Keishiro Igi, Hiroshi Narukawa, Masao Uetsuki, Satoshi Bando, Shuji Kawai, Kenji Shirano
  • Polyurethane coating compositions prepared from a polymeric diol, an alicyclic diisocyanate, an alicyclic diamine and either hydrazine or isophthalic acid dihydrazide
    Patent number: 4412022
    Abstract: Polyurethane compositions comprising a polyurethane synthesized by reacting a diol, a specific alicyclic diisocyanate, a specific alicyclic diamine and hydrazine or isophthalic acid dihydrazide in specific proportions and a solvent therefor have good solution stability and, when applied as coating compositions, give coats with good light stability, good surface properties, high softening points and sufficient flexibility at low temperatures.
    Type: Grant
    Filed: May 5, 1982
    Date of Patent: October 25, 1983
    Assignee: Kuraray Co., Ltd.
    Inventors: Koji Hirai, Kenji Shirano, Takayuki Okamura
  • Polyurethane composition having good light resistance
    Patent number: 4367307
    Abstract: A polyurethane composition comprising a polyurethane and at least one dye selected from the group consisting of metal complex dyes, vat dyes, sulfur dyes and acid dyes. The polyurethane is synthesized by the reaction of a polymeric diol containing a polyoxyethylene chain as a minor proportion, an alicyclic diisocyanate, an alicyclic diamine and hydrazine in particular proportions. This polyurethane composition is little susceptible to deterioration by light and is suitable for use as a component of artificial leather or as a coating material for fabrics.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: January 4, 1983
    Assignee: Kuraray Company, Limited
    Inventors: Koji Hirai, Kenji Shirano, Kazuo Hara, Takayuki Okamura