Using a corrosion proof austenitic iron chromium nickel nitrogen alloy for high load components
CA 1232515 A · Owner: Mannesmann Aktiengesellschaft · Inventors: Grutzner, Gunther
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A corrosion proof austenitic alloy is proposed for use in components expected to experience also a high mechanical load; the alloy is to have a high yield strength. The alloy is to have a particular composition which is subjected to a heat treatment, subsequent cold working and recrystallization annealing such that nitrogen solid solution hardening, nitride precipitation hardening and strong grain-refinement synergistically combine to obtain high yield strength values beyond those compared to yield point enhancement calculated by only addition of the three hardening effects separately.
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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 February 9, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 9, 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
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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.