Patents Assigned to Nippon Rubber Co., Ltd.
  • Patent number: 4894932
    Abstract: An air-permeable shoe including a shoe constructed of an open-cell rubber foam. A base cloth is attached to the sole or insert therein. The sole of the shoe is exposed on a side surface of the sole of the shoe wherein a top side surface of the sole is in communication with the inside of the shoe and the ambient atmosphere. The open-cell rubber foam may be a rubber latex foam having a microstructure with a compression permanent set of less than 20%.
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: January 23, 1990
    Assignee: Nippon Rubber Co., Ltd.
    Inventors: Masasuke Harada, Yutaka Kumagawa, Yoshiharu Moronaga
  • Patent number: 4890397
    Abstract: A shoe for use in sports involving running and comprising an outer ground engaging sole, an inner foot engaging sole and a midsole therebetween, the midsole having therein, at least at the outer portion of the heel, a shock absorbing member comprising a shock absorbing synthetic resin foam layer bonded at its upper and lower surfaces to hard plates.
    Type: Grant
    Filed: June 28, 1985
    Date of Patent: January 2, 1990
    Assignee: Nippon Rubber Co., Ltd.
    Inventors: Masasuke Harada, Hiroshi Kumagawa, Junji Izumi
  • Patent number: 4858339
    Abstract: A composite rubber sheet material and a sport shoe including a composite rubber sheet material includes a sponge rubber sheet and a mesh cloth having a percentage of voids in the range of 15 to 75%. The mesh cloth is inset in one side surface of the sponge rubber sheet to a depth ranging from 5 to 75% of the thickness of the mesh cloth for enhancing the stability, durability, bendability and flexibility of the composite rubber sheet material.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: August 22, 1989
    Assignee: Nippon Rubber Co., Ltd.
    Inventors: Hideki Hayafuchi, Yoshiharu Moronaga, Kiyotaka Nakano
  • Patent number: 4689900
    Abstract: An antistatic shoe including a sole having an insole and two soft antistatic projections corresponding to a medial plantar middle point and a medial calcanean point of the sole of an individual's foot. The projections are formed on the antistatic sole so as to be integrally therewith and project upwards through an insole. A charged static electricity accumulated on an individual's body and clothes is grounded to be effectively discharged through the two portions of the sole of the individual's foot. In addition, in the course of the foregoing grounding, the two portions are stimulated electrically by the electrostatic current to improve the circulation of the blood for promoting the health and development of the wearer.
    Type: Grant
    Filed: September 17, 1984
    Date of Patent: September 1, 1987
    Assignee: Nippon Rubber Co. Ltd.
    Inventor: Tokujiro Ishibashi
  • Patent number: 4661547
    Abstract: An antistatic material containing a base material which is rubber and/or polyvinyl cloride resin, to which are added a cationic quaternary ammonium salt and polyethylene glycol, and optionally aluminum hydroxide or calcium carbonate. The antistatic material has a low electric resistance and excellent thermal stability, and can be colored in any color.
    Type: Grant
    Filed: November 8, 1985
    Date of Patent: April 28, 1987
    Assignee: Nippon Rubber Co., Ltd.
    Inventors: Masasuke Harada, Kouji Tsukamoto, Tomohiro Etou
  • Patent number: 4633598
    Abstract: An insole for use in athletic shoes comprises an upper layer, a lower layer laminated on the upper layer, and a shock-absorptive foamed material layer laminated on the underside of the lower layer at least at the heel portion. The upper layer has a hardness of 30.degree.-50.degree., and the lower layer has a hardness of 50.degree.-70.degree.. The shock-absorptive foamed material layer has a hardness of 50.degree.-80.degree..
    Type: Grant
    Filed: September 14, 1984
    Date of Patent: January 6, 1987
    Assignee: Nippon Rubber Co., Ltd.
    Inventors: Yoshiharu Moronaga, Junji Izumi
  • Patent number: 4625435
    Abstract: A sports shoe having a heel counter with a heel reinforcement wall shaped to include an inner surface which is in conformity with an outer surface of a heel portion of an upper of the sports shoe. An attaching portion is formed to project inwards from a lower end portion of the heel reinforcement wall. A flange portion formed to project outwards from the lower end portion of the heel reinforcement wall is provided in such a manner that the inner surface of the heel reinforcement wall is adhered to the outer surface of the heel portion of the upper. The attaching portion thereof is interposed between and adhered to an inwardly bent portion of the upper portion and a shoe sole. The flange portion thereof is adhered to an upper surface of an outer peripheral edge portion of the shoe sole. In this manner, the heel portion is prevented from rolling during running and the heel counter is prevented from peeling off.
    Type: Grant
    Filed: August 31, 1984
    Date of Patent: December 2, 1986
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Noboru Ueda
  • Patent number: 4547979
    Abstract: An athletic shoe sole constructed to provide good cushioning and durability and to preclude overpronation of the foot. An outersole body progressively increases in thickness toward the inside edge of the sole from a longitudinal midline axis of thereof in a region extending from a heel portion to an arch portion of the outersole body, and is provided with a plurality of projection harder than the outersole body secured to its lower surface on an inner side of a heel portion of the outersole body and a plurality of projections softer than the outersole body secured to its lower surface on the remaining region of the outersole body. A cushioning midsole has a shape in section complementary to the thickness of the outersole body is overlaid on it.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: October 22, 1985
    Assignee: Nippon Rubber Co., Ltd.
    Inventors: Masasuke Harada, Yoshiharu Moronaga
  • Patent number: D278093
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: March 26, 1985
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Noboru Ueda
  • Patent number: D279620
    Type: Grant
    Filed: February 7, 1983
    Date of Patent: July 16, 1985
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Noboru Ueda
  • Patent number: D281542
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: December 3, 1985
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Toshio Iwakata
  • Patent number: D281543
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: December 3, 1985
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Yoshinori Nagano
  • Patent number: D281641
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: December 10, 1985
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Junichiro Shiki
  • Patent number: D281642
    Type: Grant
    Filed: July 18, 1983
    Date of Patent: December 10, 1985
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Shosiro Fuzita
  • Patent number: D284039
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: June 3, 1986
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Rinichi Yoshitake
  • Patent number: D284040
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: June 3, 1986
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Rinichi Yoshitake
  • Patent number: D284041
    Type: Grant
    Filed: April 20, 1984
    Date of Patent: June 3, 1986
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Rinichi Yoshitake
  • Patent number: D303317
    Type: Grant
    Filed: April 29, 1987
    Date of Patent: September 12, 1989
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Kiyotaka Nakano
  • Patent number: D304259
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: October 31, 1989
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Kiyotaka Nakano
  • Patent number: D304390
    Type: Grant
    Filed: February 10, 1987
    Date of Patent: November 7, 1989
    Assignee: Nippon Rubber Co., Ltd.
    Inventor: Kiyotaka Nakano