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:
Jul. 23, 2002
Filed:
Jul. 07, 1999
Applicant:
Inventors:
Michael Mueller, Bensheim, DE;
Volker Benz, Hoechst, DE;
Michael Meier-Kaiser, Alsbach-Haemlein, DE;
Hans Lorenz, Darmstadt, DE;
Volker Mende, Darmstadt, DE;
Helmut Haring, Reinheim, DE;
Berthold Schoenig, Rossdorf, DE;
Assignee:
Roehm GmbH & Co. KG, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
G02B 2/700 ; G02B 5/02 ;
U.S. Cl.
CPC ...
G02B 2/700 ; G02B 5/02 ;
Abstract
The invention relates to optical diffuser plates (1) made of transparent plastics such as polycarbonate or polymethacrylate. Several thin strips (2) made of plastic B inserted into plates made of transparent plastic A with the proviso that A and B are incompatible and the strips (2) made of plastic B are subsequently withdrawn. The hollows that are formed in the plate (1) made of plastic A are used to deflect light.