Expired Canadian patentCanada
Single-cast, high-temperature, thin wall structures and methods of making the same
CA 2208196 C · Owner: Frasier, Donald James · Inventors: Lane, John H.; Hoff, James Paul; Frasier, Donald James
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a single-cast, thin wall, structure capable of withstanding impinging gases at temperatures of 4300° F and higher, and method of making the same.
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 August 31, 1992 and granted May 29, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 31, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 31, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 31, 1992
GrantedMay 29, 2001
Term endedAugust 31, 2012
Patent numberCA 2208196 C
Classification (IPC)B22C9/10
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.