Austenitic cr-ni-alloy designed for oil country tubular products
CA 1305877 C · Owner: Domian, Henry A. · Inventors: Seibert, Kenneth D.; Miller, Alex S.; Domian, Henry A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An austenitic alloy has high strength and corrosion resistance and includes from 27 to 32 weight percent nickel and 24 to 28 weight percent chromium. Up to 2.75 weight percent silicon, 3 weight percent copper and molybdenum and 2 weight percent manganese are included for contributing to the characteristics to the alloy rendering the alloy particularly useful for fabricating oil well tubular products. Only very low components of nitrogen, carbon, phosphorus and sulfur are included.
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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 2009.
- 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.