Protective device for gas pressure vessels
CA 2019287 C · Owner: Alusuisse-Lonza Services Ltd. · Inventors: Reznik, Israel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The protective device prevents overheating in particular by, fire, of individual or batteries of pressure vessels (10) of length (1) equal to at least 1,5 m, employed for storage and/or transportation of gases under high pressure. The essentially cylindrical pressure vessels (10) have at least one closure cap (14) with a valve (18) or a closure plug. Mounted on one closure cap (14) is a pressure pipe (24) which communicates with the interior of the pressure vessel (10) and is fitted with a controllable venting valve (58) that under normal conditions closes off the pressure pipe (24) or a common pressure pipe (56) and has a venting pipe (60) which terminates outwith the region of the …
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 19, 1990 and granted November 9, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2012.
- 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.