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. 14, 2020
Filed:
Jun. 14, 2018
Transitions Optical, Inc., Pinellas Park, FL (US);
Meng He, Palm Harbor, FL (US);
Darrin R. Dabideen, Monroeville, PA (US);
Terry A. Kellar, II, Millbrae, CA (US);
Anil Kumar, Murrysville, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
A photochromic compound is provided, which may be a pyran, an oxazine, or a fulgide. The photochromic compound has at least one substituent Q attached thereto, each Q independently being —N, —CN, —COOR', —CCR′, —C(R′)C(R′)R′, —OCOR′, —OCOOR′, —SR′, —OSOR′″, and/or CON(R′)R′, wherein each R′ is hydrogen, an unsubstituted or substituted alkyl group having from 1 to 18 carbon atoms; an unsubstituted or substituted aryl group, an unsubstituted or substituted alkene or alkyne group having from 2 to 18 carbon atoms, wherein the substituents are halo or hydroxyl and R′″ is —CFor a perfluorinated alkyl group having from 2 to 18 carbon atoms The number, locations and nature of the constituents Q are dependent upon the structure of the photochromic compound.