Flare apparatus and methods
CA 2226809 C · Owner: Berg, Lawrence D. · Inventors: Schwartz, Robert E.; Berg, Lawrence D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved flare apparatus having long service lives for burning flammable gas and air and methods are provided. The flare apparatus is basically comprised of an outer tubular member and an inner tubular member positioned within the outer tubular member whereby an annular flammable gas discharge space is provided immediately adjacent to an annular air discharge space. The flammable gas is discharged into the atmosphere in an annular straight out pattern. At least a portion of the air is discharged into the atmosphere for mixing with the flammable gas in a swirling pattern immediately adjacent to the flammable gas which prevents internal burning and premature failure of the flare apparatus.
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 January 12, 1998 and granted August 14, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 12, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 12, 2020.
- 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.