Underground tank sump and piping system
CA 1238793 A · Owner: Owens Corning · Inventors: Messmer, Michael J.; Pugnale, Peter J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sumps are mounted on manway fittings of underground tanks, and all piping runs are routed through a sump. Underground portions of pipes between a sump and a point above ground are provided with a double wall. Filling spills and leakage from pipes into the environment are thereby generally prevented.
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
- Granted July 5, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 5, 2005.
- 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.