Patents by Inventor Tatsuru Tabobashi

Tatsuru Tabobashi 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).

  • Production method of pyrrolidone carboxylic acid and salt thereof
    Patent number: 7022863
    Abstract: The present invention provides a production method of pyrrolidone carboxylic acid or a salt thereof, which includes bringing glutamic acid or a salt thereof into contact with high-temperature high-pressure water having a temperature of above 100° C. and not higher than 300° C., and a pressure higher than the vapor pressure of water at this temperature. The present invention affords efficient production and supply of pyrrolidone carboxylic acid or a salt thereof from glutamic acid or a salt there.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: April 4, 2006
    Assignee: Ajinomoto Co., Inc.
    Inventors: Yuichi Suzuki, Ryosuke Yumioka, Tatsuru Tabobashi
  • Production method of pyrrolidone carboxylic acid and salt thereof
    Publication number: 20030018202
    Abstract: The present invention provides a production method of pyrrolidone carboxylic acid or a salt thereof, which includes bringing glutamic acid or a salt thereof into contact with high-temperature high-pressure water having a temperature of above 100° C. and not higher than 300° C., and a pressure higher than the vapor pressure of water at this temperature. The present invention affords efficient production and supply of pyrrolidone carboxylic acid or a salt thereof from glutamic acid or a salt thereof.
    Type: Application
    Filed: July 19, 2002
    Publication date: January 23, 2003
    Applicant: AJINOMOTO CO., INC
    Inventors: Yuichi Suzuki, Ryosuke Yumioka, Tatsuru Tabobashi