Patents by Inventor Jyun Ishiduka

Jyun Ishiduka 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).

  • POLYMER PARTICLE AND METHOD FOR PRODUCING THE SAME
    Publication number: 20140371420
    Abstract: A method for producing polymer particles, including (A) polymerizing and granulating a ring-opening polymerizable monomer in a compressive fluid with a catalyst in the presence of a surfactant, or (B) polymerizing and granulating an addition polymerizable monomer in a compressive fluid in the presence of a silicone surfactant.
    Type: Application
    Filed: August 27, 2014
    Publication date: December 18, 2014
    Inventors: Nobuyuki Mase, Takeshi Sako, Idzumi Okajima, Shunsuke Mori, Keishi Mizuno, Yoshitaka Yamauchi, Taichi Nemoto, Chiaki Tanaka, Satoyuki Sekiguchi, Jyun Ishiduka
  • Polymer particle and method for producing the same
    Patent number: 8846810
    Abstract: A method for producing polymer particles, including (A) polymerizing and granulating a ring-opening polymerizable monomer in a compressive fluid with a catalyst in the presence of a surfactant, or (B) polymerizing and granulating an addition polymerizable monomer in a compressive fluid in the presence of a silicone surfactant.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: September 30, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Nobuyuki Mase, Takeshi Sako, Idzumi Okajima, Shunsuke Mori, Keishi Mizuno, Yoshitaka Yamauchi, Taichi Nemoto, Chiaki Tanaka, Satoyuki Sekiguchi, Jyun Ishiduka
  • POLYMER AND METHOD FOR PRODUCING THE SAME
    Publication number: 20110218301
    Abstract: A method for producing a polymer, including polymerizing a ring-opening polymerizable monomer in a compressive fluid with a metal-free organic catalyst to produce a polymer.
    Type: Application
    Filed: March 8, 2011
    Publication date: September 8, 2011
    Inventors: Taichi NEMOTO, Nobuyuki Mase, Takeshi Sako, Idzumi Okajima, Shunsuke Mori, Chiaki Tanaka, Yoshitaka Yamauchi, Jyun Ishiduka
  • POLYMER PARTICLE AND METHOD FOR PRODUCING THE SAME
    Publication number: 20110218313
    Abstract: A method for producing polymer particles, including (A) polymerizing and granulating a ring-opening polymerizable monomer in a compressive fluid with a catalyst in the presence of a surfactant, or (B) polymerizing and granulating an addition polymerizable monomer in a compressive fluid in the presence of a silicone surfactant.
    Type: Application
    Filed: March 4, 2011
    Publication date: September 8, 2011
    Inventors: Nobuyuki MASE, Takeshi Sako, Idzumi Okajima, Shunsuke Mori, Keishi Mizuno, Yoshitaka Yamauchi, Taichi Nemoto, Chiaki Tanaka, Satoyuki Sekiguchi, Jyun Ishiduka