Patents by Inventor Shigehiro Wakamatsu

Shigehiro Wakamatsu 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: 4197326
    Abstract: A processed meat packaging tube is a tube of an orientated laminated film having more than 5% of a shrinkage coefficient at 80.degree. C., less than .+-.5% of percent elongation-shrinkage at 80.degree. C. under tensile modulus of 20 Kg/cm.sup.2 and more than 8 Kg/cm.sup.2 of tightening modulus at 5.degree. C. and more than 1.0.times.10.sup.3 Kg/cm.sup.2 of a tensile modulus of elasticity at 80.degree. C. which is formed by stretching a composite film having an inner layer made of an oxygen barrier thermoplastic resin having less than 1.times.10.sup.-11 cc.multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg (measured by Seikaken method) of oxygen permeability coefficient and outer layers made of the other thermoplastic resin having smaller water absorption than that of the inner layer.
    Type: Grant
    Filed: August 8, 1978
    Date of Patent: April 8, 1980
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Shigehiro Wakamatsu, Takashi Abe