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:
Aug. 06, 1991
Filed:
Oct. 31, 1990
Applicant:
Inventors:
Hideo Nakamura, Chiba, JP;
Masaru Wakizaka, Chiba, JP;
Michio Hashimoto, Chiba, JP;
Yohzoh Yamamoto, Chiba, JP;
Assignee:
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
525415 ; 525533 ;
Abstract
A modified epoxy resin provided with improved flexibility and curing properties is prepared by subjecting a bisphenol type epoxy resin (a) to steps (i) and (ii):