Patents by Inventor Masumi Kadobayashi

Masumi Kadobayashi 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 preparation of an ester
    Patent number: 5898077
    Abstract: The present invention provides a process for preparing an ester comprising the step of reacting a carboxylic acid and an alcohol in the presence of an esterifying catalyst comprising at least one compound having the formula:O.dbd.M(RCOO).sub.2 wherein M represents Sn or Zn and R represents a saturated or unsaturated hydrocarbon group having 1-21 carbon atoms with or without side chains. According to the present process, substantially equal equivalents of the alcohol and the acid can be reacted completely. In addition, the present invention further provides a purification process to eliminate the catalyst from a homogeneous reaction system completely.
    Type: Grant
    Filed: October 7, 1997
    Date of Patent: April 27, 1999
    Assignee: Matsumoto Yushi-Seiyaku Co., Ltd.
    Inventors: Ichiro Takahara, Masumi Kadobayashi, Noriaki Kaminaka
  • Process for preparation of an ester utilizing an esterifying catalyst
    Patent number: 5760265
    Abstract: The present invention provides a process for preparation of an ester comprising reacting a carboxylic acid and an alcohol in the presence of an esterific catalyst comprising at least one compound selected from the group consisting of halides, nitrates, carboxylates, alcoholates and acetylacetone complexes of metals of the titanium group. According to the present process, substantially equal equivalent of the alcohol and the acid can be reacted completely. In addition, the present invention further provides a purification process to eliminate the catalyst from homogeneous reaction system completely.
    Type: Grant
    Filed: March 5, 1996
    Date of Patent: June 2, 1998
    Assignee: Matsumoto Yushi Seiyaku Co., Ltd.
    Inventors: Ichiro Takahara, Masumi Kadobayashi, Noriaki Kaminaka