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:
Feb. 03, 2009
Filed:
Jul. 10, 2002
Applicants:
Gregoire Mathey, Bourg la Reine, FR;
Jean-christophe Giron, Aachen, DE;
Inventors:
Gregoire Mathey, Bourg la Reine, FR;
Jean-Christophe Giron, Aachen, DE;
Assignee:
Saint-Gobain Glass France, Courbevoie, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1335 (2006.01); G02F 1/1333 (2006.01); G03B 21/60 (2006.01); G03B 21/56 (2006.01);
U.S. Cl.
CPC ...
Abstract
The subject of the invention is an element having variable optical properties, comprising: It applies especially to the manufacture of backprojection screens.