Patents by Inventor Yasuhiro Amemiya

Yasuhiro Amemiya 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).

  • Process for preparing alkylcyclopentadiene derivatives
    Patent number: 4567308
    Abstract: An alkylation method of a cyclopentadiene derivative comprising the vapor-phase reaction of a cyclopentadiene derivative and an aliphatic lower alcohol in the presence of a specific heterogeneous basic catalyst.
    Type: Grant
    Filed: March 21, 1985
    Date of Patent: January 28, 1986
    Assignees: Asahi Chemical Co., Ltd., Zenichi Yoshida
    Inventors: Zenichi Yoshida, Susumu Kato, Yasuhiro Amemiya, Keisuke Yanai
  • Process for producing chlorinated phenoxytoluene derivatives
    Patent number: 4399075
    Abstract: Phenoxytoluene derivative is chlorinated in a very high yield and selectivity in the presence of nitrogen-, sulfur-, phosphorus- or oxygen-containing compound which is capable of forming a charge-transfer complex with chlorine, chlorine radical or organic halogen compound, together with radical initiator and organic halogen compound.
    Type: Grant
    Filed: June 25, 1981
    Date of Patent: August 16, 1983
    Assignee: Asahi Chemical Company, Limited
    Inventors: Zenichi Yoshida, Susumu Kato, Takuya Fujiki, Yasuhiro Amemiya