Patents by Inventor Ryotaro Nozaki

Ryotaro Nozaki 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).

  • Hot melt composition and use thereof
    Patent number: 6303684
    Abstract: A hot melt composition including 100 parts by weight of a styrene thermoplastic elastomer having an intrinsic viscosity [&eegr;] of not less than 1 dl/g and 200 to 3000 parts by weight of a liquid softener selected from process oil, liquid rubber and a modified substance thereof, wherein: (a) the composition has a softening point measured by ring and ball softening pint method of from 120 to 230° C.; (b) the composition generates no crack when not less than 75% of a compressive strain is applied under an atmosphere of a temperature of −30 to 40° C.; and (c) the composition does not flow when it is allowed to stand in a load-free state under an atmosphere of a temperature of 100° C. for 24 hours.
    Type: Grant
    Filed: March 15, 1999
    Date of Patent: October 16, 2001
    Assignee: Asahi Chemical Synthetic Co., Ltd.
    Inventors: Yasuhito Suzuki, Mitsuru Sakashita, Tomo Iwata, Ryotaro Nozaki, Jun-ichi Nakayama