Patents by Inventor Koji Maeba

Koji Maeba 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).

  • ISOCYANATE PRODUCTION SYSTEM, ISOCYANATE COMPOSITION, POLYMERIZABLE COMPOSITION, RESIN, AND MOLDED ARTICLE
    Publication number: 20240343684
    Abstract: Provided is an isocyanate production system 1 including a control device 10 that selects energy produced by a biomass boiler 134, biomass methanol or carbon recycle methanol used by a methanol cracking device 150, recycled oil or biomass oil used by a carbon monoxide generation device 160, and a compound derived from a biomass raw material used by a polyamine production device 140 so that an environmental load value of an isocyanate compound, which is derived from energy produced by a boiler group 130, methanol used by the methanol cracking device 150, oil used by the carbon monoxide generation device 160, and a polyamine compound raw material used by the polyamine production device 140, is a predetermined value or less.
    Type: Application
    Filed: August 18, 2022
    Publication date: October 17, 2024
    Inventors: Toshihiro TAKAI, Masaaki SASAKI, Koji MAEBA, Yasuyuki KURIHARA, Tatsuhiko KOBAYASHI, Kunihiro YAMADA, Tsubasa MORIOKA
  • 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