Film holder for dental x-ray film developing machine, and film mounting stage for the holder
CA 2048955 C · Owner: Nix Company Ltd. · Inventors: Tanaka, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A film holder is described for use in a dental Xray film developing machine. The film holder has a stem portion, an engagement portion formed at one end of the stem portion and a film-mounting portion composed of two support portions formed at the other end of the stem portion and extending out in an opposing relationship from the stem portion. Plural filmmounting projections are provided at different levels in the direction of the thickness of the film holder in the proximity of each of free end portions and base portions of the respective support portions whereby a, film can be placed between the support portions while being held between the projections. Also described is a film mounting …
Read the whole patent
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
- Filed August 12, 1991 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.