Patents by Inventor Yoshitake Kawai

Yoshitake Kawai 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).

  • Semi-sealed or sealed package for preserving produce composed of resin covered paper
    Patent number: 5744205
    Abstract: A package and a method are disclosed for preserving freshness of produce using a corrugated fiberboard composed of an outer liner having a carbon dioxide permeability coefficient Pco.sub.2 of greater than 5.times.10.sup.-10 cm.sup.3 (STP)cm/cm.sup.2 .multidot.s.multidot.cmHg at a temperature of 27.degree. C.; a corrugating medium; and an inner liner having a water-vapor transmission rate of less than 100 g/m.sup.2 .multidot.day at a temperature of 27.degree. C. The end parts of the corrugated fiber board which are exposed to an outer surface of the package are substantially sealed with a seal tape. A wrapping paper covered at least on one surface thereof with a resin layer which contains therein less than 0.917 g/cm.sup.3 density of a copolymer of ethylene and .alpha.-olefin having a carbon number of 3 to 12, having a carbon dioxide permeability coefficient of greater than 8.times.10.sup.-10 cm.sup.3 (STP)cm/cm.sup.2 .multidot.s.multidot.cmHg, a permeability coefficient ratio Pco.sub.2 /Po.sub.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: April 28, 1998
    Assignee: Toyo Seikan Kaisha, Ltd.
    Inventors: Yoshitake Kawai, Kazuo Taira, Kanemichi Yamaguchi