The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 05, 2009
Filed:
Jul. 13, 2006
Hisashi Nakagawa, Tsukuba, JP;
Masahiro Akiyama, Tsukuba, JP;
Takahiko Kurosawa, Tsukuba, JP;
Atsushi Shiota, Sunnyvale, CA (US);
Hisashi Nakagawa, Tsukuba, JP;
Masahiro Akiyama, Tsukuba, JP;
Takahiko Kurosawa, Tsukuba, JP;
Atsushi Shiota, Sunnyvale, CA (US);
JSR Corporation, Tokyo, JP;
Abstract
A method of producing a polymer includes hydrolyzing and condensing a hydrolyzable-group-containing silane monomer (B) in the presence of one or more polycarbosilanes (A), at least one of the polycarbosilanes (A) being a polycarbosilane (I) having a weight average molecular weight of 500 or more and obtained by reacting a compound of the following general formula (1) in the presence of at least one of an alkali metal and an alkaline earth metal,RYSiCRX  (1)