Patents by Inventor Fuminori Oota

Fuminori Oota 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).

  • Method for producing modified conjugated diene polymer/copolymer, modified conjugated diene polymer/copolymer, and rubber composition and tire using the same
    Patent number: 9623705
    Abstract: The invention provides a method for producing a modified conjugated diene (co)polymer, the method including comprising: a modification reaction step including causing an organic silane compound to react with a conjugated diene (co)polymer having an active site at the active site, the organic silane compound having a characteristic group for forming a silanol group through hydrolysis and, in the vicinity of the characteristic group, (i) a functional group which binds the organic silane compound to the conjugated diene (co)polymer via addition to or substitution at the active site and which promotes reaction between the silanol group and a reinforcing filler after the addition or substitution reaction, or (ii) a functional group which promotes reaction between the silanol group and a reinforcing filler, and a hydrolyzation step performed after the modification reaction step; a modified conjugated diene (co)polymer having, at a molecular end of the conjugated diene (co)polymer, a silanol group, and a functional
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: April 18, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Ken Tanaka, Noriko Mori, Yuki Itoh, Yoichi Ozawa, Ryuji Nakagawa, Junko Matsushita, Shigeaki Matsuo, Kouji Masaki, Fumihiro Shiraishi, Fuminori Oota
  • METHOD FOR PRODUCING MODIFIED CONJUGATED DIENE POLYMER/COPOLYMER, MODIFIED CONJUGATED DIENE POLYMER/COPOLYMER, AND RUBBER COMPOSITION AND TIER USING THE SAME
    Publication number: 20110146877
    Abstract: The invention provides a method for producing a modified conjugated diene (co)polymer, the method including comprising: a modification reaction step including causing an organic silane compound to react with a conjugated diene (co)polymer having an active site at the active site, the organic silane compound having a characteristic group for forming a silanol group through hydrolysis and, in the vicinity of the characteristic group, (i) a functional group which binds the organic silane compound to the conjugated diene (co)polymer via addition to or substitution at the active site and which promotes reaction between the silanol group and a reinforcing filler after the addition or substitution reaction, or (ii) a functional group which promotes reaction between the silanol group and a reinforcing filler, and a hydrolyzation step performed after the modification reaction step; a modified conjugated diene (co)polymer having, at a molecular end of the conjugated diene (co)polymer, a silanol group, and a functional
    Type: Application
    Filed: March 10, 2009
    Publication date: June 23, 2011
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Ken Tanaka, Noriko Mori, Yuki Itoh, Yoichi Ozawa, Ryuji Nakagawa, Junko Matsushita, Shigeaki Matsuo, Kouji Masaki, Fumihiro Shiraishi, Fuminori Oota