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:
Jun. 21, 2005
Filed:
Oct. 03, 2002
John F. Graf, Ballston Lake, NY (US);
Eugene G. Olczak, Glenville, NY (US);
Grant Hay, Evansville, IN (US);
Ramesh Hariharan, Cambridge, MA (US);
Philippe Schottland, Evansville, IN (US);
John F. Graf, Ballston Lake, NY (US);
Eugene G. Olczak, Glenville, NY (US);
Grant Hay, Evansville, IN (US);
Ramesh Hariharan, Cambridge, MA (US);
Philippe Schottland, Evansville, IN (US);
General Electric Company, Schenectady, NY (US);
Abstract
The invention features a bulk light diffuser material. The bulk light diffuser material may be a sheet or film comprising about 95 to about 99.8 percent by weight of polycarbonate and about 0.2 to about 2.5 percent by weight of a particulate light diffusing component, based on the total weight of the polycarbonate and the light diffusing particles. The sheet material has a percent transmittance of at least 70% and a haze of at least 10% measured according to the American Society for Testing and Materials (ASTM) standard D 1003.