Apparatus for the heat treatment of ophthalmic lenses, especially contact lenses
CA 2091745 A1 · Owner: Haase, Lothar · Inventors: Geis, Helmut; Uftring, Winfried; Bachmann, Theo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for the heat treatment of ophthalmic lenses especiallv contact lenses, Abstract, In an apparatus for the heat treatment of ophthalmic lenses especially contact lenses, which comprises an approximately cylindrical housing (4) of closed design having an inlet opening (5) and an outlet opening, transport means for transporting the ophthalmic lenses located inside moulds (F) along an open transport path (P) which is arranged inside the, housing (4) and connects the inlet and the outlet opening and heating means (11,12), arranged inside the housing (4) the open transport path (P) inside the housing (4) is of an essentially spiral shape, and the heating means (11,12) are arranged …
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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
- Filed March 16, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 16, 2015.
- 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.