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. 25, 2026
Filed:
Mar. 31, 2022
Rohm and Haas Electronic Materials Llc, Marlborough, MA (US);
Emad Aqad, Northborough, MA (US);
Jong Keun Park, Shrewsbury, MA (US);
Yinjie Cen, Shrewsbury, MA (US);
Choong-Bong Lee, Westborough, MA (US);
DUPONT ELECTRONIC MATERIALS INTERNATIONAL, LLC, Marlborough, MA (US);
Abstract
A photoactive compound of formula (1a) or (1b): wherein Ris substituted or unsubstituted Calkyl, substituted or unsubstituted Ccycloalkyl, substituted or unsubstituted Cheterocycloalkyl, substituted or unsubstituted Caryl, or substituted or unsubstituted Cheteroaryl comprising an aromatic ring heteroatom chosen from nitrogen, oxygen, or a combination thereof; Rand Rare as provided herein; Ris substituted or unsubstituted Calkyl, substituted or unsubstituted Ccycloalkyl, substituted or unsubstituted Cheterocycloalkyl, substituted or unsubstituted Caryl, or substituted or unsubstituted Cheteroaryl; and Mis an organic cation.