Patents by Inventor Mitsuhiro Takahashi

Mitsuhiro Takahashi 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).

  • Method of preparing 2-hydroxy-3-alkyl-2-cyclopenten-1-one
    Patent number: 3963781
    Abstract: A method of preparing 2-hydroxy-3-alkyl-2-cyclopenten-1-one which comprises reacting 2-alkyl-5-carboalkoxycyclopentanone with nitrite in the presence of water and alkali; rendering the reaction system acidic; and either treating the mass for hydrolysis by heating or carrying out oxime exchange reaction in the presence of an aliphatic lower carbonyl compound added as an acceptor to the acidified reaction system.
    Type: Grant
    Filed: December 18, 1974
    Date of Patent: June 15, 1976
    Assignee: Kobayashi Perfumery Co., Ltd.
    Inventors: Hiroyuki Kyomori, Kazuhiro Sasaki, Mitsuhiro Takahashi
  • Process for forming continuous fiber reinforced material embedded in thermosetting resin
    Patent number: 3946097
    Abstract: A continuously supplied reinforcing material is impregnated with an uncured thermosetting resin and shaped into a predetermined sectional configuration, which is then covered with a forcibly extruded molten thermoplastic resin. The thermoplastic resin is immediately cooled to enclose the shaped fiber material with the solidified thermoplastic resin, and a thus continuously formed material is obtained.
    Type: Grant
    Filed: January 3, 1974
    Date of Patent: March 23, 1976
    Assignee: Ube-Nitto Kasei Co., Ltd.
    Inventors: Mitsuhiro Takahashi, Tadao Senoo