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:
Oct. 17, 2017
Filed:
Apr. 23, 2013
Central Glass Company, Limited, Ube-shi, Yamaguchi, JP;
Hiroki Uoyama, Saitama, JP;
Kazuhiro Yamanaka, Tachikawa, JP;
Central Glass Company, Limited, Ube-shi, JP;
Abstract
Disclosed are a diamine represented by the following formula, a polyimide and a polyamide using the same as the raw material, a cyclized product thereof, and a method for producing the same. In the formula, A represents a single bond, an ether bond, a sulfide bond, CO, CH, SO, SO, C(CH), NHCO or C(CF), or a bivalent group having an aliphatic ring, a hetero ring or an aromatic ring, Rrepresents a Calkyl group or a halogen group, and each of 'a' and 'b' independently represents an integer of 0-2, and 1≦a+b≦4. The polyimide and the polyamide are a fluorescent polyimide and a fluorescent polyamide that are easily soluble in organic solvents to the extent that they can be formed into a film by a wet process when making an optical device, that have heat resistance and strength when formed into a film, and that have superior fluorescent characteristics.