Patents by Inventor Yasuhiro Mizumoto

Yasuhiro Mizumoto 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).

  • Rubber composition employing soft black and a thermosetting resin and tires employing said composition
    Patent number: 4326576
    Abstract: Disclosed is a high hardness rubber composition having a hardness of at least 92, which comprises 100 parts by weight of a rubber, 55 to 95 parts by weight of soft black having an average particle size of 40 to 80 millimicrons, 5 to 30 parts by weight of a thermosetting resin and a small amount of a curing agent, the sum of the amounts of the soft black and thermosetting resin being 60 to 100 parts by weight per 100 parts by weight of the rubber.This high hardness rubber composition is advantageously used as a tire reinforcement for the rim cushion portion or for both the rim cushion portion and bead filler.
    Type: Grant
    Filed: March 18, 1981
    Date of Patent: April 27, 1982
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yasuhiro Mizumoto, Yukio Tozawa, Masatoshi Kozima, Masaru Hirai
  • Rubber composition
    Patent number: 4076668
    Abstract: A rubber composition which comprises more than 0.5 wt parts of a cobalt salt of organic acid, more than 0.5 wt part of monohydroxybenzoic acid component and 100 wt parts of a rubber.
    Type: Grant
    Filed: February 27, 1976
    Date of Patent: February 28, 1978
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Kunihiro Kaneda, Masashi Kida, Akihiko Nakayama, Atsushi Kanazawa, Hiroyuki Kaido, Yasuhiro Mizumoto, Tsuneo Koyama