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:
Nov. 17, 1998
Filed:
Nov. 15, 1996
Applicant:
Inventors:
William Langille, Amherst, NH (US);
Robin Clabburn, Sevenhampton, GB;
Assignees:
Nashua Corporation, Nashua, NH (US);
Nashua Photo Limited, , GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
428141 ; 428156 ; 4289122 ; 428913 ; 359454 ; 359455 ; 359456 ; 359459 ; 359460 ; 359443 ; 359452 ; 359453 ; 359457 ; 430290 ; 264496 ;
Abstract
Various forms of light-diffusing screen are disclosed comprising plastics sheets having surface texturing of some kind, adding to or modifying the diffusing effect. The plastics sheets may have bulk diffusing characteristics in addition to the surface texturing. The surface texturing may be produced by, for example, embossing or by molding the plastics against a textured surface such as a 'brushed' surface or a ribbed or grooved surface imparting asymmetrical diffusion characteristics to the screen.