Patents by Inventor Hideki Tanada

Hideki Tanada 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).

  • Aminoketone derivatives and use thereof
    Patent number: 5602160
    Abstract: Aminoketone derivative compounds containing a heterocyclic ring bonded to an aminoketone moiety and useful as effective ingredients of centrally acting muscle relaxants and pollakiurea curing agents.(+)3-phenyl-5-[2-(1-pyrrolidinylmethyl)butyryl] isoxazole, which has a more remarkable central muscle relaxant action as compared with its racemic modification, can be effectively separated from the racemic modification using optically active 10-camphorsulfonic acid as the agent for the optical resolution.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: February 11, 1997
    Assignee: Mitsui Toatsu Chemicals Incorporated
    Inventors: Hideki Tanada, Kazuya Sakai, Seitaro Kajiya, Norio Ohto, Kazutoshi Horikomi, Akira Matsubara, Hideshi Shimizu, Akira Mizuchi
  • Aminoketone derivative and use thereof
    Patent number: 5498619
    Abstract: Aminoketone derivative compounds containing a heterocyclic ring bonded to an aminoketone moiety and useful as effective ingredients of centrally acting muscle relaxants and pollakiurea curing agents.(+)3-phenyl-5-[2-(1-pyrrolidinylmethyl)butyryl]isoxazole, which has a more remarkable central muscle relaxant action as compared with its racemic modification, can be effectively separated from the racemic modification using optically active 10-camphorsulfonic acid as the agent for the optical resolution.
    Type: Grant
    Filed: May 16, 1994
    Date of Patent: March 12, 1996
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Hideki Tanada, Kazuya Sakai, Seitaro Kajiya, Norio Ohto, Kazutoshi Horikomi, Akira Matsubara, Hideshi Shimizu, Akira Mizuchi
  • Aminoketone derivatives of 1,2-oxazole and use thereof
    Patent number: 5338857
    Abstract: Aminoketone derivative compounds containing a heterocyclic ring bonded to an aminoketone moiety and useful as effective ingredients of centrally acting muscle relaxants and pollakiurea curing agents.(+)3-phenyl-5-[2-(1-pyrrolidinylmethyl)butyryl]isoxazole, which has a more remarkable central muscle relaxant action as compared with its racemic modification, can be effectively separated from the racemic modification using optically active 10-camphorsulfonic acid as the agent for the optical resolution.
    Type: Grant
    Filed: February 24, 1992
    Date of Patent: August 16, 1994
    Assignee: Mitsui Toatsu Chemicals Incorporated
    Inventors: Norio Ohto, Kazutoshi Horikomi, Akira Matsubara, Hideki Tanada, Kazuya Sakai, Seitaro Kajiya, Akira Mizuchi, Hideshi Shimizu
  • Preparation process of aminoketones
    Patent number: 5194606
    Abstract: Novel aminoketones useful as central muscle relaxants and their preparation processes are disclosed. The disclosed processes are novel processes which do not use any heavy metal in view of the facts that their products are will be used as drugs and which require no complex purification step such as liberation of the aminoketones from their hydrochlorides or the like.
    Type: Grant
    Filed: July 23, 1991
    Date of Patent: March 16, 1993
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Akira Matsubara, Kazuya Sakai, Hideki Tanada, Hironori Komatsu
  • Imidazole derivatives and antiepileptics comprising said imidazole derivatives as effective ingredients
    Patent number: 5112841
    Abstract: Described herein are imidazole derivatives having a specific structure and satisfactory as antiepileptics from the standpoint of the strength of action, prolonged action and side effects as well as their preparation processes.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: May 12, 1992
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Akira Matsubara, Kazuya Sakai, Hideki Tanada, Akira Mizuchi, Kazutoshi Horikomi, Takuma Ohtsu
  • Preparation process of aminoketones
    Patent number: 5055585
    Abstract: Novel aminoketones useful as central muscle relaxants and their preparation processes are disclosed. The disclosed processes are novel processes which do not use any heavy metal in view of the facts that their products are will be used as drugs and which require no complex purification step such as liberation of the aminoketones from their hydrochlorides or the like.
    Type: Grant
    Filed: January 31, 1991
    Date of Patent: October 8, 1991
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Akira Matsubara, Kazuya Sakai, Hideki Tanada, Hironori Komatsu