Underground storage tank consisting of an internal metal structure of a static external facing and of a filler with increased bond between the metal structure and the filler
CA 2094734 A1 · Owner: Ferrari, Franco · Inventors: Ferrari, Franco
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Underground storage thank consisting of an internal metal structure (1), of a static external facing (2) and of a filler (4) such a hot blown bitume located between the metal structure (I) and the static facing (2) the outer surface, of the metal structure (1) presenting welded structural shapes (7) properly spaced and cross connected to increase the bond between the metal structure (1) and the filler (4).
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 April 23, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 23, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 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.