Patents by Inventor Yoshimitsu Onodera

Yoshimitsu Onodera 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).

  • Prepolymerized catalyst for olefin polymerization, method of producing this prepolymerized catalyst and method of producing olefin polymer
    Patent number: 8431659
    Abstract: A method of producing a prepolymerized catalyst for olefin polymerization comprising a fine powder removal step of removing fine particles from olefin-prepolymerized catalyst particles for olefin polymerization. The prepolymerized catalyst having a low fine particle content is applicable suitably to the field of continuous polymerization of olefins.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: April 30, 2013
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomoaki Goto, Yoshimitsu Onodera
  • PREPOLYMERIZED CATALYST FOR OLEFIN POLYMERIZATION, METHOD OF PRODUCING THIS PREPOLYMERIZED CATALYST AND METHOD OF PRODUCING OLEFIN POLYMER
    Publication number: 20120095173
    Abstract: A method of producing a prepolymerized catalyst for olefin polymerization comprising a fine powder removal step of removing fine particles from olefin-prepolymerized catalyst particles for olefin polymerization. The prepolymerized catalyst having a low fine particle content is applicable suitably to the field of continuous polymerization of olefins.
    Type: Application
    Filed: December 6, 2011
    Publication date: April 19, 2012
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tomoaki GOTO, Yoshimitsu ONODERA
  • Prepolymerized catalyst for olefin polymerization, method of producing this prepolymerized catalyst and method of producing olefin polymer
    Patent number: 8101537
    Abstract: A method of producing a prepolymerized catalyst for olefin polymerization comprising a fine powder removal step of removing fine particles from olefin-prepolymerized catalyst particles for olefin polymerization. The prepolymerized catalyst having a low fine particle content is applicable suitably to the field of continuous polymerization of olefins.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: January 24, 2012
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tomoaki Goto, Yoshimitsu Onodera
  • PREPOLYMERIZED CATALYST FOR OLEFIN POLYMERIZATION, METHOD OF PRODUCING THIS PREPOLYMERIZED CATALYST AND METHOD OF PRODUCING OLEFIN POLYMER
    Publication number: 20100280196
    Abstract: A method of producing a prepolymerized catalyst for olefin polymerization comprising a fine powder removal step of removing fine particles from olefin-prepolymerized catalyst particles for olefin polymerization. The prepolymerized catalyst having a low fine particle content is applicable suitably to the field of continuous polymerization of olefins.
    Type: Application
    Filed: February 25, 2010
    Publication date: November 4, 2010
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Tomoaki Goto, Yoshimitsu Onodera
  • Method for purifying &bgr;-phenylethyl alcohol
    Patent number: 6207867
    Abstract: A method for purifying &bgr;-phenylethyl alcohol, comprising an extractive distillation process in which crude &bgr;-phenylethyl alcohol is extractive-distilled using an extraction solvent (A), and an extracting process in which the extraction solvent (A) after use in the extractive distillation process is extracted using other extraction solvent (B).
    Type: Grant
    Filed: April 5, 2000
    Date of Patent: March 27, 2001
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Kazuhiko Kamaya, Yoshimitsu Onodera