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:
May. 13, 2008
Filed:
Aug. 24, 2004
Applicants:
William J. Begley, Webster, NY (US);
William F. Nichols, Newark, NY (US);
Manju Rajeswaran, Fairport, NY (US);
Natasha Andrievsky, Webster, NY (US);
Michael R. Landry, Wolcott, NY (US);
Inventors:
William J. Begley, Webster, NY (US);
William F. Nichols, Newark, NY (US);
Manju Rajeswaran, Fairport, NY (US);
Natasha Andrievsky, Webster, NY (US);
Michael R. Landry, Wolcott, NY (US);
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 7/20 (2006.01); C07C 13/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for improving the stability to photo-oxidation of a polycyclic aromatic compound having at least two polymorphic forms comprises treating a first polymorph with one or more solvents to obtain the more stable second polymorph and then separating the second polymorph from the solvent.