Patents by Inventor Yoshinori Hara

Yoshinori Hara 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).

  • Patent number: 5733605
    Abstract: A method for forming a two-layer coating film by applying under specified conditions, onto a material to be coated, two coatings in a state of two layers contacting each other, by the use of a die capable of discharging two coatings in a state of two layers contacting each other and then conducting baking, wherein a cured two-layer coating film superior in appearance and other properties is formed, without causing popping in the formed film during its baking.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: March 31, 1998
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Tatsuru Akiyama, Osamu Kozima, Toshihide Fujitani, Yoshinori Hara
  • Patent number: 5286906
    Abstract: A process for the preparation of a 3-aminomethyl-3,5,5-trialkylcyclohexylamine, which comprises hydrogenating 3-cyano-3,5,5-trialkylcyclohexylamine in the presence of ammonia and a ruthenium-cobalt catalyst.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: February 15, 1994
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Yoshinori Hara, Haruhiko Kusaka, Masamichi Onuki, Sugio Nishimura
  • Patent number: 5079372
    Abstract: A method for producing a lactone by hydrogenating a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic acid ester in the presence of a catalyst, wherein the hydrogenation reaction is conducted in the liquid phase in the presence of (1) ruthenium, (2) an organic phosphine and (3) a compound of a metal selected from the group consisting of Groups IVA, VA and IIIB in the Periodic Table.According to the present invention, for the production of a lactone by hydrogenating a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic ester, the reaction is conducted in a homogeneous liquid phase reaction by using the ruthenium,organic phosphine and compound of a metal selected from the group consisting of Groups IVA, VA and IIIB, of the present invention as the catalyst, whereby the desired lactone product can be obtained at high selectivity under a mild condition as compared with the conventional methods.
    Type: Grant
    Filed: May 1, 1990
    Date of Patent: January 7, 1992
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Keisuke Wada, Yoshinori Hara, Koushi Sasaki
  • Patent number: 5077442
    Abstract: A method for producing 1,4-butanediol by hydrogenating succinic anhydride, succinic acid or .gamma.-butyrolactone in the presence of a catalyst, wherein the hydrogenation reaction is conducted in a liquid phase using as the catalyst a ruthenium type catalyst comprising ruthenium, an organic phosphine and a phosphorus compound of the following formula (1): ##STR1## wherein each of X and Y is an atom or a group selected from the group consisting of a hydrogen atom, a hydroxyl group, a halogen atom, an alkoxy group, an alkyl group and an aryl group.
    Type: Grant
    Filed: April 11, 1991
    Date of Patent: December 31, 1991
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Yoshinori Hara, Hiroko Inagaki
  • Patent number: 5021589
    Abstract: A method for producing a lactone by hydrogenating a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic acid ester in the presence of a catalyst, wherein said catalyst is a ruthenium catalyst comprising (1) ruthenium, (2) an organic phosphine and (3) a conjugate base of an acid having a pKa of less than 2.
    Type: Grant
    Filed: October 30, 1989
    Date of Patent: June 4, 1991
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Keisuke Wada, Yoshinori Hara, Koushi Sasaki
  • Patent number: 4931573
    Abstract: A method for producing a lactone by hydrogenating a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic acid ester in the presence of a catalyst, wherein the hydrogenation reaction is conducted in the liquid phase in the presence of (1) ruthenium, (2) an organic phosphine and (3) a compound of a metal selected from the group consisting of Groups IVA, VA and IIIB in the Periodic Table.According to the present invention, for the production of a lactone by hydrogenating a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic ester, the reaction is conducted in a homogeneous liquid phase reaction by using the ruthenium, organic phosphine and compound of a metal selected from the group consisting of Groups IVA, VA and IIIB, of the present invention as the catalyst, whereby the desired lactone product can be obtained at high selectivity under a mild condition as compared with the conventional methods.
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: June 5, 1990
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Keisuke Wada, Yoshinori Hara, Koushi Sasaki
  • Patent number: 4892955
    Abstract: A method for producing a lactone by hydrogenating a dicarboxylic acid, a dicarboxylic acid anhydride and/or a dicarboxylic acid ester in the presence of a catalyst, wherein said catalyst is a ruthenium catalyst comprising (1) ruthenium, (2) an organic phosphine and (3) a conjugate base of an acid having a pKa of less than 2.
    Type: Grant
    Filed: July 13, 1987
    Date of Patent: January 9, 1990
    Assignee: Mitsubishi Chemical Industries Limited
    Inventors: Keisuke Wada, Yoshinori Hara, Koushi Sasaki
  • Patent number: 4595701
    Abstract: A process for producing aliphatic alcohols by reacting carbon monoxide and hydrogen in a liquid phase in the presence of catalyst components, characterized in that rhodium and a trialkylphosphine represented by the general formula PR.sub.1 R.sub.2 R.sub.3 where each of R.sub.1, R.sub.2 and R.sub.3 is a primary alkyl group, a secondary alkyl group, a tertiary alkyl group or a cycloalkyl group, are used as the catalyst components.
    Type: Grant
    Filed: December 24, 1984
    Date of Patent: June 17, 1986
    Assignee: Agency of Industrial Science and Technology
    Inventors: Shuzo Nakamura, Takashi Deguchi, Mitsuhisa Tamura, Masaru Ishino, Keisuke Wada, Eiichi Watanabe, Yoshinori Hara, Kenji Murayama, Hiroo Tanaka