Patents by Inventor Takaimi Matsumoto

Takaimi Matsumoto 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).

  • PROCESS FOR PRODUCTION OF MODIFIED CONJUGATED DIENE COPOLYMER, MODIFIED CONJUGATED DIENE COPOLYMER PRODUCED BY THE PROCESS, RUBBER COMPOSITION, AND TIRE
    Publication number: 20110160388
    Abstract: A process for producing a modified conjugated diene-based copolymer comprising bringing a modifier into reaction with the active end of a copolymer of a conjugated diene compound and an aromatic vinyl compound having the active end, wherein a compound having (i) a hydrolyzable functional group having silicon and (ii) a group which can be converted into a protonic amino group or a protonic amino group protected with an eliminable functional group after the reaction is used as the modifier, a step of adding a condensation catalyst is conducted after the modifier is brought into the reaction, and the content of the unit of the aromatic vinyl compound and the structure of the chain of the aromatic vinyl compound are specified.
    Type: Application
    Filed: April 28, 2009
    Publication date: June 30, 2011
    Applicant: Bridgestone Corporation
    Inventors: Ken Tanaka, Yoichi Ozawa, Ryuji Nakagawa, Takuo Sone, Takaimi Matsumoto, Yutaka Nagata