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. 01, 1994
Filed:
Apr. 19, 1993
Applicant:
Inventors:
Peter J Elton, Cheshire, GB;
John C Clarke, Cheshire, GB;
John L Cawse, Cheshire, GB;
George Littler, Cheshire, GB;
Andrew Wigglesworth, Bucks, GB;
Peter J Herring, Bucks, GB;
Assignee:
Ilford Limited, Mobberley, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; G03C / ; G03C / ; G03C / ;
U.S. Cl.
CPC ...
430501 ; 430496 ; 430527 ; 430531 ; 430533 ; 430538 ;
Abstract
There is provided a roll film assembly which comprises a length of photographic film having attached to each end thereof a length of backing paper, the film and the backing paper being wound together on a flanged spool, the backing paper being a laminate of paper and polyethylene which comprises as an opaqueing agent a layer of polyethylene which comprises from 7 to 10% by weight of carbon black particles of which from 20 to 100% by weight are conductive carbon particles.