Stabilized high vacuum drying installation for industrial hides and similar products
CA 2329995 A1 · Owner: Officine Di Cartigliano S.P.A. · Inventors: Polato, Antonio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stabilised high vacuum drying installation for industrial hides and similar products includes a plurality of drying beds (2 2', 2'') with heating , platforms (3, 3' 3'') and hermetic covers (4, 4', 4''), vacuum means (7) connected to the drying beds to extract vapours coming from the hides and to reduce the pressure to minimum working values (Pi) a circuit with valve means , (10, 10', 10''; 11 11', 11'') to selectively connect the drying beds to the vacuum means. The valve means include, downstream of every drying bed at , least one cutoff valve (10, 10', 10'') for selectively connecting such bed initially at atmospheric pressure, to the vacuum means (7) and at least one , check valve …
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 June 28, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 28, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2021.
- 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.