Patents by Inventor Shinya Saihata

Shinya Saihata 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 saturated aliphatic carboxylic acid amide
    Patent number: 6291712
    Abstract: A process for producing a saturated aliphatic carboxylic acid amide, comprising reacting a saturated aliphatic carboxylic acid with ammonia to thereby obtain a saturated aliphatic ammonium carboxylate and subjecting the saturated aliphatic ammonium carboxylate to a dehydration reaction for obtaining a saturated aliphatic carboxylic acid amide, wherein the dehydration reaction of the saturated aliphatic ammonium carboxylate is conducted while supplying water to a reaction system in which the dehydration reaction is carried out. Preferably, water is continuously supplied to the reaction system so that the production of the saturated aliphatic carboxylic acid amide is carried out in a continuous manner and the amount of water present in a steady state ranges from 20 to 70 mol per 100 mol of a total of the saturated aliphatic carboxylic acid, the ammonia, the saturated aliphatic ammonium carboxylate, the saturated aliphatic carboxylic acid amide and the water.
    Type: Grant
    Filed: November 26, 1997
    Date of Patent: September 18, 2001
    Assignee: Showa Denko K.K.
    Inventors: Shinya Saihata, Masaaki Katayama, Hitoshi Nakamura, Toshiyuki Aizawa