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. 28, 2007
Filed:
Apr. 19, 2001
Applicants:
William Giroldini, San Donato Milanese, IT;
Luciana Crisci, Graffignana, IT;
Vincenzo Malatesta, San Maurizio al Lambro, IT;
Inventors:
William Giroldini, San Donato Milanese, IT;
Luciana Crisci, Graffignana, IT;
Vincenzo Malatesta, San Maurizio al Lambro, IT;
Assignee:
Great Lakes Chemical (Europe) GmbH, Frauenfeld, CH;
Primary Examiner:
Int. Cl.
CPC ...
C07D 265/04 (2006.01); C07D 265/12 (2006.01); C07D 209/76 (2006.01); C07D 209/78 (2006.01); C08K 5/35 (2006.01);
U.S. Cl.
CPC ...
Abstract
Photochromatic compounds belonging to the groups of chromenes and spiro-pyrans having general formula (I)