Joint for turbine enclosure in underground tanks
CA 2055760 A1 · Owner: Owens-Corning Fiberglas Corporation · Inventors: Schneider, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A storage tank suitable for underground containment of liquids comprises a tank wall having a bore therethrough, an upwardly protruding collar mounted on the tank and having a radially inwardly flaring flange which turns upwardly, the flange being at an angle to the vertical within the range of 5 to 75 degrees.
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 November 18, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 18, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 18, 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.