Patents by Inventor Yasumichi Ooto

Yasumichi Ooto 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).

  • Decomposing system for polyisocyanate residues, and start-up method for the same
    Patent number: 8282889
    Abstract: An object of the invention is to provide a decomposing system for polyisocyanate residues that is capable of suppressing reaction of polyisocyanate residues with high temperature and high pressure water to allow smooth start-up of the operation, and a start-up method for the decomposing system for the polyisocyanate residues. The decomposing system is used for hydrolyzing the polyisocyanate residues to polyamine using high temperature and high pressure water, comprising a hydrolyzer, a water feed pipe connected to the hydrolyzer, a residual feed pipe connected to the water feed pipe, a solvent feed line for filling an organic solvent in a solvent filling portion of the residual feed pipe, and a solvent draining line. Upon start-up of the operation, the organic solvent is previously filled in the solvent filling portion via the solvent feed line and the solvent draining line, first, and then, the high temperature and high pressure water is fed from the water feed pipe to the hydrolyzer.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: October 9, 2012
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tadashi Yoshida, Yasumichi Ooto, Akio Saito
  • DECOMPOSING SYSTEM FOR POLYISOCYANATE RESIDUES, AND START-UP METHOD FOR THE SAME
    Publication number: 20110027134
    Abstract: An object of the invention is to provide a decomposing system for polyisocyanate residues that is capable of suppressing reaction of polyisocyanate residues with high temperature and high pressure water to allow smooth start-up of the operation, and a start-up method for the decomposing system for the polyisocyanate residues. The decomposing system is used for hydrolyzing the polyisocyanate residues to polyamine using high temperature and high pressure water, comprising a hydrolyzer, a water feed pipe connected to the hydrolyzer, a residual feed pipe connected to the water feed pipe, a solvent feed line for filling an organic solvent in a solvent filling portion of the residual feed pipe, and a solvent draining line. Upon start-up of the operation, the organic solvent is previously filled in the solvent filling portion via the solvent feed line and the solvent draining line, first, and then, the high temperature and high pressure water is fed from the water feed pipe to the hydrolyzer.
    Type: Application
    Filed: October 15, 2010
    Publication date: February 3, 2011
    Applicant: MITSUI CHEMICALS, Inc.
    Inventors: Tadashi Yoshida, Yasumichi Ooto, Akio Saito
  • Decomposing system for polyisocyanate residues, and start-up method for the same
    Patent number: 7875253
    Abstract: An object of the invention is to provide a decomposing system for polyisocyanate residues that is capable of suppressing reaction of polyisocyanate residues with high temperature and high pressure water to allow smooth start-up of the operation, and a start-up method for the decomposing system for the polyisocyanate residues. The decomposing system is used for hydrolyzing the polyisocyanate residues to polyamine using high temperature and high pressure water, comprising a hydrolyzer, a water feed pipe connected to the hydrolyzer, a residual feed pipe connected to the water feed pipe, a solvent feed line for filling an organic solvent in a solvent filling portion of the residual feed pipe, and a solvent draining line. Upon start-up of the operation, the organic solvent is previously filled in the solvent filling portion via the solvent feed line and the solvent draining line, first, and then, the high temperature and high pressure water is fed from the water feed pipe to the hydrolyzer.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: January 25, 2011
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Tadashi Yoshida, Yasumichi Ooto, Akio Saito
  • Decomposing system for polyisocyanate residues, and start-up method for the same
    Publication number: 20090137847
    Abstract: An object of the invention is to provide a decomposing system for polyisocyanate residues that is capable of suppressing reaction of polyisocyanate residues with high temperature and high pressure water to allow smooth start-up of the operation, and a start-up method for the decomposing system for the polyisocyanate residues. The decomposing system is used for hydrolyzing the polyisocyanate residues to polyamine using high temperature and high pressure water, comprising a hydrolyzer, a water feed pipe connected to the hydrolyzer, a residual feed pipe connected to the water feed pipe, a solvent feed line for filling an organic solvent in a solvent filling portion of the residual feed pipe, and a solvent draining line. Upon start-up of the operation, the organic solvent is previously filled in the solvent filling portion via the solvent feed line and the solvent draining line, first, and then, the high temperature and high pressure water is fed from the water feed pipe to the hydrolyzer.
    Type: Application
    Filed: July 12, 2006
    Publication date: May 28, 2009
    Applicant: Mitsui Chemicals Polyurethanes, Inc.
    Inventors: Tadashi Yoshida, Yasumichi Ooto, Akio Saito