Heat-resisting alloy with magnesium and calcium
CA 2320442 A1 · Owner: Suarez, Francis S. · Inventors: Suarez, Francis S.; Hartmann, Vernon William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat-resisting weldable alloy consisting essentially of by weight percent , 0.1 to 0.4 aluminum 0.001 to 0.008 calcium, 0.002 to 0.1 magnesium 0 to 0.08 , carbon, 0 to 1 manganese, 0 to 0.002 sulfur 0 to 1 silicon, 0 to 0.75 copper, 0 to 0.3 phosphorus 18 to 22 nickel, 18 to 22 chromium, and the balance iron and incidental impurities.
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 December 10, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2021.
- 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.