Patents by Inventor Koichi Dan

Koichi Dan 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).

  • Polyethylene terephthalate composition, manufacturing method therefor, and polyethylene terephthalate film
    Patent number: 9056956
    Abstract: A polyethylene terephthalate composition includes a copolymer component having at least 3 functional groups in an amount of 0.01 mol % to 1.00 mol % with respect to ethylene terephthalate units, in which a ratio (Mw/Mn) between the weight average molecular weight and number average molecular weight of the polyethylene terephthalate composition is 5.0 to 8.0; an alkali metal compound in an amount of 1.0 mol/ton to 3.0 mol/ton in terms of alkali metal element; a phosphorus compound in an amount of 1.5 mol/ton to 5.0 mol/ton in terms of elemental phosphorus; and an o-chlorophenol insoluble matter in an amount of less than 0.5 wt %.
    Type: Grant
    Filed: August 31, 2010
    Date of Patent: June 16, 2015
    Assignee: Toray Industries, Inc.
    Inventors: Hiroji Kojima, Jun Sakamoto, Koichi Dan, Shigeru Aoyama
  • POLYETHYLENE TEREPHTHALATE COMPOSITION, MANUFACTURING METHOD THEREFOR, AND POLYETHYLENE TEREPHTHALATE FILM
    Publication number: 20120208943
    Abstract: A polyethylene terephthalate composition includes a copolymer component having at least 3 functional groups in an amount of 0.01 mol % to 1.00 mol % with respect to ethylene terephthalate units, in which a ratio (Mw/Mn) between the weight average molecular weight and number average molecular weight of the polyethylene terephthalate composition is 5.0 to 8.0; an alkali metal compound in an amount of 1.0 mol/ton to 3.0 mol/ton in terms of alkali metal element; a phosphorus compound in an amount of 1.5 mol/ton to 5.0 mol/ton in terms of elemental phosphorus; and an o-chlorophenol insoluble matter in an amount of less than 0.5 wt %.
    Type: Application
    Filed: August 31, 2010
    Publication date: August 16, 2012
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Hiroji Kojima, Jun Sakamoto, Koichi Dan, Shigeru Aoyama
  • Hollow fiber membrane and method of producing the same
    Patent number: 7504034
    Abstract: A method of producing a hollow fiber membrane includes discharging a polyvinylidene fluoride solution comprising a polyvinylidene fluoride resin and a poor solvent at a temperature above a phase separation temperature into a cooling bath at a temperature below the phase separation temperature to coagulate the polyvinylidene fluoride resin. The hollow fiber membrane comprises a polyvinylidene fluoride resin having spherical structures that have an average diameter in the range of 0.3 to 30 ?m.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: March 17, 2009
    Assignee: Toray Industries, Inc.
    Inventors: Shin-Ichi Minegishi, Masahiro Henmi, Toshiyuki Ishizaki, Koichi Dan
  • Hollow fiber membrane and method of producing the same
    Publication number: 20070090051
    Abstract: A method of producing a hollow fiber membrane includes discharging a polyvinylidene fluoride solution comprising a polyvinylidene fluoride resin and a poor solvent at a temperature above a phase separation temperature into a cooling bath at a temperature below the phase separation temperature to coagulate the polyvinylidene fluoride resin. The hollow fiber membrane comprises a polyvinylidene fluoride resin having spherical structures that have an average diameter in the range of 0.3 to 30 ?m.
    Type: Application
    Filed: October 17, 2006
    Publication date: April 26, 2007
    Applicant: Toray Industries, Inc.
    Inventors: Shin-ichi Minegishi, Masahiro Henmi, Toshiyuki Ishizaki, Koichi Dan
  • Hollow fiber membrane and method of producing the same
    Patent number: 7182870
    Abstract: A method of producing a hollow fiber membrane includes discharging a polyvinylidene fluoride solution comprising a polyvinylidene fluoride resin and a poor solvent at a temperature above a phase separation temperature into a cooling bath at a temperature below the phase separation temperature to coagulate the polyvinylidene fluoride resin. The hollow fiber membrane comprises a polyvinylidene fluoride resin having spherical structures that have an average diameter in the range of 0.3 to 30 ?m.
    Type: Grant
    Filed: June 20, 2005
    Date of Patent: February 27, 2007
    Assignee: Toray Industries, Inc.
    Inventors: Shin-ichi Minegishi, Masahiro Henmi, Toshiyuki Ishizaki, Koichi Dan
  • Hollow fiber membrane and method of producing the same
    Publication number: 20050258101
    Abstract: A method of producing a hollow fiber membrane includes discharging a polyvinylidene fluoride solution comprising a polyvinylidene fluoride resin and a poor solvent at a temperature above a phase separation temperature into a cooling bath at a temperature below the phase separation temperature to coagulate the polyvinylidene fluoride resin. The hollow fiber membrane comprises a polyvinylidene fluoride resin having spherical structures that have an average diameter in the range of 0.3 to 30 ?m.
    Type: Application
    Filed: June 20, 2005
    Publication date: November 24, 2005
    Applicant: Toray Industries, Inc.
    Inventors: Shin-ichi Minegishi, Masahiro Henmi, Toshiyuki Ishizaki, Koichi Dan
  • Hollow fiber membrane and method of producing the same
    Publication number: 20030094409
    Abstract: A method of producing a hollow fiber membrane includes discharging a polyvinylidene fluoride solution comprising a polyvinylidene fluoride resin and a poor solvent at a temperature above a phase separation temperature into a cooling bath at a temperature below the phase separation temperature to coagulate the polyvinylidene fluoride resin. The hollow fiber membrane comprises a polyvinylidene fluoride resin having spherical structures that have an average diameter in the range of 0.3 to 30 &mgr;m.
    Type: Application
    Filed: September 27, 2002
    Publication date: May 22, 2003
    Applicant: Toray Industries, Inc.
    Inventors: Shin-ichi Minegishi, Masahiro Henmi, Toshiyuki Ishizaki, Koichi Dan