Patents by Inventor Noriko Wakasa

Noriko Wakasa 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 for producing fluorine-containing acrylate
    Patent number: 7470808
    Abstract: A process for producing a fluorine-containing acrylic acid ester represented by CH2?C(Rf)(COOR) characterized in that 1-bromo-1-perfluoroalkylethene represented by CH2?CBr—Rf, or 1,2-dibromo-1-perfluoroalkylethane represented by CH2CBr—CHBr—Rf is allowed to react with an alcohol represented by ROH in the presence of a palladium catalyst, carbon monoxide, and two or more kinds of bases. The fluorine-containing acrylic acid ester is a useful compound having wide applications in materials for pharmaceuticals and functional polymers.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: December 30, 2008
    Assignees: Tosoh F-Tech, Inc., Sagami Chemical Research Center
    Inventors: Takamasa Fuchikami, Noriko Wakasa, Kenji Tokuhisa, Hideyuki Mimura, Shoji Arai
  • Method for producing fluorine-containing acrylate
    Publication number: 20060122423
    Abstract: A process for producing a fluorine-containing acrylic acid ester represented by CH2?C(Rf)(COOR) characterized in that 1-bromo-1-perfluoroalkylethene represented by CH2?CBr—Rf, or 1,2-dibromo-1-perfluoroalkylethane represented by CH2CBr—CHBr—Rf is allowed to react with an alcohol represented by ROH in the presence of a palladium catalyst, carbon monoxide, and two or more kinds of bases. The fluorine-containing acrylic acid ester is a useful compound having wide applications in materials for pharmaceuticals and functional polymers.
    Type: Application
    Filed: March 24, 2004
    Publication date: June 8, 2006
    Inventors: Takamasa Fuchikami, Noriko Wakasa, Kenji Tokuhisa, Hideyuki Mimura, Shoji Arai
  • Process for producing aromatic primary amine by low-pressure
    Patent number: 6476267
    Abstract: A method for producing an aromatic primary amine, characterized by hydrogenating an aromatic nitrile at a low partial pressure of hydrogen in a heterogeneous system comprising a non-reductive polar solvent and a nickel-immobilized catalyst suspended therein was proposed. By such method, an aromatic primary amine which is industrially useful as a medicine, agricultural chemical, dye surfactant, chemical agent, etc. can be produced in a high yield.
    Type: Grant
    Filed: November 19, 2001
    Date of Patent: November 5, 2002
    Assignee: Sagami Chemical Research Center
    Inventors: Takamasa Fuchigami, Satoshi Takamizawa, Noriko Wakasa
  • Process for preparing lactones
    Patent number: 5502217
    Abstract: A lactone is prepared by catalytically hydrogenating a dicarboxylic acid having 3 to 10 carbon atoms or a functional derivative thereof in the presence of a catalyst comprising a metal selected from the elements of group VIII of the periodic table or a combination of said metal with an element selected from the elements of groups IVa, VIb and VIIb of the peridic table, and further in the co-presence of an alkali metal salt or an alkali metal hydroxide.
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: March 26, 1996
    Assignees: Tosoh Corporation, Sagami Chemical Research Center
    Inventors: Takamasa Fuchikami, Noriko Wakasa, De-Hua He, Takanori Miyake, Takashi Okada, Atsushi Fujimura, Hiroyuki Sasakibara, Yoshiaki Kanou, Toshihiro Saito