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Expired Canadian patentCanada

Photosensitive materials for use in making dry transfers

CA 1195166 A · Owner: Letraset Limited · Inventors: Thornley, John S.; Shepherd, John V.

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A T I O N TO ALL WHOM IT MAY CONCERN:, Be it known that we Letraset Limited, a British, Company, of 195-203 Waterloo Road London SE1 8XJ England, are in possession of an invention entitled PHOTOSENSITIVE MATERIALS FOR USE IN MAKING DRY TRANSFERS and the following disclosure contains a full description of the invention and of the. best mode known to the inventors for taking advantage of same. ABSTRACT, PHOTOSENSITIVE MATERIALS FOR USE IN MAKING DRY TRANSFERS, Photosensitive materials for use in the making of dry transfer material are described which comprise two carrier sheets which may be peeled apart and three interlayers. The central interlayer is an image-forming layer e.g. a pigmented …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted October 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 6, 1983
GrantedOctober 15, 1985
Term endedOctober 15, 2002
Patent numberCA 1195166 A
Classification (IPC)G03F7/34

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedJune 6, 1983Patent grantedOct 15, 1985Term endedOct 15, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.