Expired Canadian patentCanada
Silicone hydrocarbon hydraulic fluids
CA 1087159 A · Owner: Union Carbide Corporation · Inventors: Shiffler, Richard W.; Coffman, Robert 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
Hydraulic fluid compositions comprising an akloxysiloxane and a hydrocarbon oil. S P E C I F I C A T I O N ++, 1.
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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 October 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 28, 1977
GrantedOctober 7, 1980
Term endedOctober 7, 1997
Patent numberCA 1087159 A
Classification (IPC)C10M169/04 +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.