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:
Apr. 14, 2009
Filed:
Mar. 01, 2007
Applicants:
Robert W. Walters, County of Westmoreland, PA (US);
Anil Kumar, County of Allegheny, PA (US);
Clara E. Nelson, County of Allegheny, PA (US);
Anu Chopra, County of Allegheny, PA (US);
Inventors:
Robert W. Walters, County of Westmoreland, PA (US);
Anil Kumar, County of Allegheny, PA (US);
Clara E. Nelson, County of Allegheny, PA (US);
Anu Chopra, County of Allegheny, PA (US);
Assignee:
Transitions Optical, Inc., Pinellas Park, FL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07D 265/30 (2006.01); C07D 211/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
Described are naphthols useful in the manufacture of novel indeno-fused photochromic naphthopyran materials.