Expired Canadian patentCanada
Pellicle
CA 1305627 C · Owner: Mitsui Petrochemical Industries, Ltd. · Inventors: Matsuzaki, Hitomi; Nakagawa, Hiroaki
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pellicle is composed of a pellicle frame a, pellicle film spread on one side face of the pellicle frame, and a tacky substance layer having a high light transmittance formed on the inner side face of the pellicle film.
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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 July 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 4, 1988
GrantedJuly 28, 1992
Term endedJuly 28, 2009
Patent numberCA 1305627 C
Classification (IPC)G03F1/62
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.