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. 16, 2013
Filed:
Jul. 27, 2010
Applicants:
Yoshiaki Okabe, Hitachi, JP;
Hiroyuki Kagawa, Hitachinaka, JP;
Inventors:
Yoshiaki Okabe, Hitachi, JP;
Hiroyuki Kagawa, Hitachinaka, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 59/68 (2006.01);
U.S. Cl.
CPC ...
Abstract
A recyclable epoxy resin composition using a plant biomass in a resin skeleton and a cured material of the epoxy resin composition, and various types of products using them are provided. The epoxy resin composition comprises an epoxy resin; and a curing agent, wherein the curing agent is a biomass-derived acid anhydride having an acid anhydride bonded via an ester linkage to a biomass with a weight-average molecular weight of 300 to 5000.