Patents by Inventor Masamitsu Tsukada

Masamitsu Tsukada 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: 5419933
    Abstract: An annular article-wrapping member includes a shrinkable wrapping material is wound on the outer periphery of an annular article to be wrapped in such a manner that the direction of shrinkage of the shrinkable wrapping material coincides with a circumferential direction of the outer periphery of the annular article. The overlapped portions of the wrapping material subsequently are joined together. The shrinkable wrapping material is heated to be shrunk to provide an intermediate wrapping member having sleeve openings having a diameter smaller than an inner diameter of the annular article. Sleeve forming portions of the intermediate wrapping member together in a ring-shape along an inner periphery of the annular article. The portion of the shrinkable wrapping material disposed inwardly of the joined portion is removed by cutting, thereby obtaining the annular article-wrapping member.
    Type: Grant
    Filed: August 31, 1992
    Date of Patent: May 30, 1995
    Assignee: Heisei Polymer Co., Ltd.
    Inventors: Masamitsu Tsukada, Kiyoshi Murata, Yasushi Ota, Yoshihiko Watanabe
  • Patent number: 5203137
    Abstract: An annular article-wrapping member is includes a shrinkable wrapping material which is wound on the outer periphery of an annular article to be wrapped in such a manner that the direction of shrinkage of the shrinkable wrapping material coincides with a circumferential direction of the outer periphery of the annular article. The overlapped portions of the wrapping material subsequently are joined together. The shrinkable wrapping material is heated to be shrunk to provide an intermediate wrapping member having sleeve openings having a diameter smaller than an inner diameter of the annular article. Sleeve forming portions of the intermediate wrapping member together in a ring-shape along an inner periphery of the annular article. The portion of the shrinkable wrapping material disposed inwardly of the joined portion is removed by cutting, thereby obtaining the annular article-wrapping member.
    Type: Grant
    Filed: November 27, 1991
    Date of Patent: April 20, 1993
    Assignee: Heisei Polymer Co., Ltd.
    Inventors: Masamitsu Tsukada, Kiyoshi Murata, Yasushi Ota, Yoshihiko Watanabe
  • Patent number: 5186989
    Abstract: An annular article-wrapping member includes a shrinkable wrapping material which is wound on the outer periphery of an annular article to be wrapped in such a manner that the direction of shrinkage of the shrinkable wrapping material coincides with a circumferential direction of the outer periphery of the annular article. The overlapped portions of the wrapping material subsequently are joined together. The shrinkable wrapping material is heated to be shrunk to provide an intermediate wrapping member having sleeve openings having a diameter smaller than an inner diameter of the annular article. Sleeve forming portions of the intermediate wrapping member together in a ring-shape along an inner periphery of the annular article. The portion of the shrinkable wrapping material disposed inwardly of the joined portion is removed by cutting, thereby obtaining the annular article-wrapping member.
    Type: Grant
    Filed: March 6, 1990
    Date of Patent: February 16, 1993
    Assignee: Heisei Polymer Co., Ltd.
    Inventors: Masamitsu Tsukada, Kiyoshi Murata, Yasushi Ota, Yoshihiko Watanabe
  • 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