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:
Jan. 23, 2018
Filed:
Mar. 29, 2017
E I Du Pont DE Nemours and Company, Wilmington, DE (US);
Weishi Wu, Landenberg, PA (US);
Weiying Gao, Landenberg, PA (US);
E I DU PONT DE NEMOURS AND COMPANY, Wilmington, DE (US);
Abstract
There is provided a compound having Formula I. In Formula I: R-Rare the same or different and are H, D, alkyl, silyl, aryl, deuterated alkyl, deuterated silyl, or deuterated aryl, where no more than two R-Rare biphenyl and where at least two of R-Rhave Formula II. In Formula II: Ar is phenyl, naphthyl, heteroaryl, spirofluorenyl, or a deuterated analog thereof; Ris the same or different at each occurrence and is D, alkyl, silyl, aryl, deuterated alkyl, deuterated silyl, or deuterated aryl, where adjacent Rgroups can join to form a fused aromatic ring or fused deuterated aromatic ring; m is an integer form 0-4; n is an integer from 1-5; and the asterisk represents a point of attachment.