Method of processing titanium aluminum alloys modified by chromium and niobium
CA 2011808 C · Owner: Huang, Shyh-Chin · Inventors: Huang, Shyh-Chin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of preparing a TiAl base composition containing niobium and chromium according to the formula Ti48Al48Cr2Nb2 is taught. The composition is melted and cast. It is then homogenized at temperatures up to 1400°C. The cast and homogenized composition is enclosed in a restraining band, heated to forging temperature and forged. Following the forging it is annealed and aged.
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 February 22, 1990 and granted June 19, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 22, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 22, 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.