Patents by Inventor Keiitsu Kobayashi

Keiitsu Kobayashi 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: 5051481
    Abstract: A low-temperature heat-shrinkable film having a haze value not larger than 8%, a heat shrinkability in the machine direction at a temperature of 90.degree. C. of at least 30%, and a shrinkage stress of at least 300 g/mm.sup.2, is made from a composition comprising (a) a linear ethylene polymer containing short-chain branches and having a density not larger than 0.940 g/cm.sup.2 and (b) an ethylene/propylene random copolymer containing 3.5 to 10% by weigh of units derived from ethylene, wherein the proportion of the ethylene/propylene random copolymer in the composition is 15 to 50% by weight.
    Type: Grant
    Filed: July 12, 1989
    Date of Patent: September 24, 1991
    Assignees: Showa Denko K. K., Taisei Polymer Co.
    Inventors: Toshio Taka, Takuo Okubo, Keiitsu Kobayashi, Takehiko Asano, Yoshio Kawasaki, Kiyotaka Osanai
  • Patent number: 4554202
    Abstract: A packing cloth comprising a woven or knitted fabric obtained by using, as at least a portion of either or both of warp and weft, thread or tape obtained by melt extrusion of a linear low-density ethylene polymer having a density of less than 0.945 g/cm.sup.3 and having a branched short chain, followed by stretching at a temperature of less than 120.degree. C. This packaging cloth has an improved tear strength and notch propagation resistance.
    Type: Grant
    Filed: July 6, 1984
    Date of Patent: November 19, 1985
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Ryosuke Kamei, Keiitsu Kobayashi, Akira Nakamura, Toshikazu Shimamura, Masamitsu Tsukada, Hisashi Ono