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:
Apr. 24, 2012
Filed:
Jan. 29, 2010
Applicants:
Shojiro Kaita, Wako, JP;
Nobuyuki Kibino, Oita, JP;
Kazufumi Kai, Minato-ku, JP;
Inventors:
Assignees:
Showa Denko K.K., Tokoy, JP;
Riken, Saitama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 232/04 (2006.01); C08F 4/70 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a norbornene copolymer having excellent properties such as transparency, heat resistance, low water absorption and electric insulating property, which copolymer comprises a monomer unit represented by formula (1) and formula (2) and having a number average molecular weight (Mn) of 300,000 to 2,000,000.(In the formulae, Rrepresents an alkyl group having 1 to 10 carbon atoms; and R, Rand Rindependently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.)