Patents by Inventor Katsuki Hayashida

Katsuki Hayashida 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 for tire tread
    Patent number: 5985978
    Abstract: A rubber composition for a tire tread comprising 100 parts by weight of a diene rubber and 35 to 60 parts by weight of a carbon black having a nitrogen specific surface area (N.sub.2 SA) of 120-150 m.sup.2 /g, a 24M4DBP of 95-110 ml/100 g, an N.sub.2 SA/IA of 0.95-1.05, a .DELTA.Dst of less than 70 nm, a Tint of more than 130, and a toluene discoloration (T%) of not less than 70% but less than 80%.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: November 16, 1999
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Yasushi Kikuchi, Toru Nakamura, Hiroyuki Saito, Katsuki Hayashida
  • Rubber compositions
    Patent number: 5830946
    Abstract: A rubber composition comprises a hydrogenated NBR, zinc dimethacrylate, zinc diacrylate, or an admixture thereof, an epoxy compound and an organic peroxide vulcanizer. A hose is also provided, comprising an inner tube, a reinforcement layer and an outer tube, at least the inner tube being formed from the above rubber composition.
    Type: Grant
    Filed: October 22, 1996
    Date of Patent: November 3, 1998
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Ozamu Ozawa, Katsuki Hayashida, Tomoji Saitoh