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:
Jan. 10, 2006
Filed:
Jun. 04, 2003
Applicants:
Geoffrey P. Morris, White Bear Lake, MN (US);
Richard M. Fischer, Jr., Hudson, WI (US);
Warren D. Ketola, St. Paul, MN (US);
Bradley D. Guth, Hudson, WI (US);
Inventors:
Geoffrey P. Morris, White Bear Lake, MN (US);
Richard M. Fischer, Jr., Hudson, WI (US);
Warren D. Ketola, St. Paul, MN (US);
Bradley D. Guth, Hudson, WI (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 33/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to optical filters comprising an opacified portion. The optical filters are preferably suitable for use in illuminators for weathering devices.