Patents by Inventor Tatsuki Kamatsuki

Tatsuki Kamatsuki 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 polyisocyanate
    Patent number: 9035087
    Abstract: A method for producing a polyisocyanate includes a purification step of purifying an unpurified polyisocyanate, the purification step including a tar ingredient removal step of removing tar ingredients from an unpurified polyisocyanate, and a distillation step of distilling the unpurified polyisocyanate from which tar ingredients have been removed through a dividing wall distillation column.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: May 19, 2015
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Koji Maeba, Haruhiko Noguchi, Tatsuki Kamatsuki, Masaaki Sasaki
  • PROCESS FOR PRODUCING POLYISOCYANATE
    Publication number: 20100249450
    Abstract: A method for producing a polyisocyanate includes a purification step of purifying an unpurified polyisocyanate, the purification step including a tar ingredient removal step of removing tar ingredients from an unpurified polyisocyanate, and a distillation step of distilling the unpurified polyisocyanate from which tar ingredients have been removed through a dividing wall distillation column.
    Type: Application
    Filed: November 10, 2008
    Publication date: September 30, 2010
    Inventors: Koji Maeba, Haruhiko Noguchi, Tatsuki Kamatsuki, Masaaki Sasaki