Patents by Inventor Mikio Nakane

Mikio Nakane 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).

  • Polyester continuous production process
    Patent number: 6703478
    Abstract: A process for continuously producing a polyester comprising an aromatic dicarboxylic acid or a lower alkyl ester thereof and an alkylene glycol having 2 to 4 carbon atoms as the main glycol component by recycling part or all of a distillate comprising an alkylene glycol having 2 to 4 carbon atoms recovered from a polycondensation reaction step as the main component as a raw material for the polyester. Low-boiling substances contained in the distillate are separated by flush distillation and the distillate is supplied to an ester exchange reaction step or esterification reaction step.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: March 9, 2004
    Assignee: Teijin Limited
    Inventors: Mikio Nakane, Kentaro Yamaguchi, Fuminori Takenaga
  • Process for continuously producing polyester
    Publication number: 20020161166
    Abstract: A process for continuously producing a polyester comprising an aromatic dicarboxylic acid or a lower alkyl ester thereof and an alkylene glycol having 2 to 4 carbon atoms as the main glycol component by recycling part or all of a distillate comprising an alkylene glycol having 2 to 4 carbon atoms recovered from a polycondensation reaction step as the main component as a raw material for the polyester. Low-boiling substances contained in the distillate are separated by flush distillation and the distillate is supplied to an ester exchange reaction step or esterification reaction step.
    Type: Application
    Filed: December 27, 2001
    Publication date: October 31, 2002
    Inventors: Mikio Nakane, Kentaro Yamaguchi, Fuminori Takenaga