Patents by Inventor Chizu Komatsu

Chizu Komatsu 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 producing a halobenzene
    Patent number: 4942268
    Abstract: A process for producing a halobenzene represented by the formula: ##STR1## where R is a lower alkyl group, a lower alkoxy group or a halogen atom, and X is a halogen atom, which comprises halogenating a benzene represented by the formula: ##STR2## where R is as defined above, in a liquid phase in the presence of a catalyst, characterized in that the catalyst is a combination of an aliphatic carboxylic acid component and a zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 3 to 8 and a pore size of from 6 to 10 .ANG..
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: July 17, 1990
    Assignee: Ihara Chemical Industry Co., Ltd.
    Inventors: Toshihiro Suzuki, Chizu Komatsu
  • Process for producing a halobenzene
    Patent number: 4831199
    Abstract: A process for producing a halobenzene represented by the formula: ##STR1## where R is a lower alkyl group, a lower alkoxy group or a halogen atom, and X is a halogen atom, which comprises halogenating a benzene represented by the formula: ##STR2## where R is as defined above, in a liquid phase in the presence of a catalyst, characterized in that the catalyst is a combination of an aliphatic carboxylic acid component and a zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 3 to 8 and a pore size of from 6 to 10 .ANG..
    Type: Grant
    Filed: June 9, 1987
    Date of Patent: May 16, 1989
    Assignee: Ihara Chemical Industry Co., Ltd.
    Inventors: Toshihiro Suzuki, Chizu Komatsu
  • Process for producing p-chlorobenzenes
    Patent number: 4724269
    Abstract: A process for producing a p-chlorobenzene having the formula: ##STR1## wherein R is a lower alkyl group, a lower alkoxy group or a halogen atom, which comprises chlorinating a benzene having the formula: ##STR2## wherein R is as defined above, in a liquid phase in the presence of a catalyst, characterized in that the catalyst is a combination of an aliphatic alcohol having the formula:R'OH (III)wherein R' is a lower alkyl group or a lower haloalkyl group, and a zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 3 to 8 and a pore size of from 6 to 10 .ANG..
    Type: Grant
    Filed: June 18, 1986
    Date of Patent: February 9, 1988
    Assignee: Ihara Chemical Industry Co., Ltd.
    Inventors: Toshihiro Suzuki, Chizu Komatsu