Patents by Inventor Tomoaki Nogata

Tomoaki Nogata 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 crystals of polymorphic 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecaboxylic acid by poor-solvent addition method
    Patent number: 8735596
    Abstract: Disclosed is a process for producing A-form crystals of 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid, comprising: a step of dissolving by heating 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid in one or a plurality of solvents as a good solvent, selected from the group consisting of 1-propanol, 2-propanol, ethanol, and acetone; a step of cooling the solution; and a step of adding to the solution a hydrocarbon solvent as a poor solvent.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: May 27, 2014
    Assignee: Teijin Pharma Limited
    Inventors: Akihito Uemura, Tomoaki Nogata, Takumi Takeyasu
  • PROCESS FOR PRODUCING CRYSTALS OF POLYMORPHIC 2-(3-CYANO-4-ISOBUTYLOXYPHENYL)-4-METHYL-5-THIAZOLECABOXYLIC ACID BY POOR-SOLVENT ADDITION METHOD
    Publication number: 20120108821
    Abstract: Disclosed is a process for producing A-form crystals of 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid, comprising: a step of dissolving by heating 2-(3-cyano-4-isobutyloxyphenyl)-4-methyl-5-thiazolecarboxylic acid in one or a plurality of solvents as a good solvent, selected from the group consisting of 1-propanol, 2-propanol, ethanol, and acetone; a step of cooling the solution; and a step of adding to the solution a hydrocarbon solvent as a poor solvent.
    Type: Application
    Filed: July 14, 2010
    Publication date: May 3, 2012
    Applicant: TEIJIN PHARMA LIMITED
    Inventors: Akihito Uemura, Tomoaki Nogata, Takumi Takeyasu
  • Viscous liquid stirring device and a process for producing polycarbonate by using the stirring device
    Patent number: 5816697
    Abstract: A viscous liquid stirring device comprising a first rotary shaft and a second rotary shaft which are arranged in parallel to each other in the horizontal plane in the vessel. The rotary shafts have a plurality of rotors thereon and are rotated at the same speed and in the same direction that the upper face of the first rotary shaft moves away from the second rotary shaft. A viscous liquid inlet portion is formed on the top portion of the inner wall of the end plate of the vessel.
    Type: Grant
    Filed: November 27, 1996
    Date of Patent: October 6, 1998
    Assignee: Teijin Limited
    Inventors: Tomoaki Nogata, Masashi Shimonaru, Toru Sawaki, Takeshi Muraoka