Expired Canadian patentCanada
Btu meter for monitoring the heating value of fuel gases
CA 1180917 A · Owner: Westinghouse Electric Corporation · Inventors: Hickam, William M.; Carlson, Gerald L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The oxygen consumed to deplete the fuel content of a flowing fuel medium is measured as an indication of the heating value of the fuel medium.
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 January 15, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 15, 2002.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 11, 1982
GrantedJanuary 15, 1985
Term endedJanuary 15, 2002
Patent numberCA 1180917 A
Classification (IPC)G01N25/22 +2 more
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.