Patents by Inventor Ryochi Ohtsuka

Ryochi Ohtsuka 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).

  • Packaging films
    Patent number: 6465109
    Abstract: A film suitable for spiral packaging is highly sealable and provides a strong self-adhesiveness of the front and reverse sides of superposed films upon spiral packaging. The film includes two layers comprising (A) a layer including a resin composition containing at least one kind of adhesives-rendering resin having a resin density of 0.950 g/cm3, such as rosin resins, at a concentration of 0.002 to 12.0% by weight in a polyolefin resin having a resin density of more than 0.910 g/cm3, and (B) another layer including a resin composition containing the abovementioned adhesiveness-rendering resin at a concentration of 0.05 to 25.0% by weight and a plasticizing oil at a concentration of 0.01 to 8.0% by weight in a low density linear polyethylene resin having a resin density of 0.860 to 0.920 g/cm3.
    Type: Grant
    Filed: February 21, 2001
    Date of Patent: October 15, 2002
    Assignee: Aicello Chemical Co., Ltd.
    Inventor: Ryochi Ohtsuka
  • Packaging films
    Publication number: 20010033939
    Abstract: A film suitable for spiral packaging is highly sealable and provides a strong self-adhesiveness of the front and reverse sides of superposed films upon spiral packaging. The film includes two layers comprising (A) a layer including a resin composition containing at least one kind of adhesives-rendering resin having a resin density of 0.950 g/cm3, such as rosin resins, at a concentration of 0.002 to 12.0% by weight in a polyolefin resin having a resin density of more than 0.910 g/cm3, and (B) another layer including a resin composition containing the abovementioned adhesiveness-rendering resin at a concentration of 0.05 to 25.0% by weight and a plasticizing oil at a concentration of 0.01 to 8.0% by weight in a low density linear polyethylene resin having a resin density of 0.860 to 0.920 g/cm3.
    Type: Application
    Filed: February 21, 2001
    Publication date: October 25, 2001
    Inventor: Ryochi Ohtsuka
  • Corrosion inhibiting laminate sheets and containers
    Patent number: 5840381
    Abstract: A laminate sheet having excellent corrosion-inhibiting effects and physical strength, which sheet is useful in packing metal products subjected to influence of changes in outside temperature and humidity, and which sheet is comprised of an inner layer made of a thermoplastic resin containing water-soluble glass powder and optionally a vapor phase corrosion inhibitor, a middle layer made of a thermoplastic resin containing inorganic metal salt corrosion inhibitor(s), and an outer layer made of a barrier resin with excellent barrier properties against outside air and against ultraviolet rays.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: November 24, 1998
    Assignee: Aicello Chemical Co., Ltd.
    Inventor: Ryochi Ohtsuka