Expired Canadian patentCanada
Stabilizing clay with hydroxy-aluminum and base
CA 1198275 A · Owner: Chevron Research And Technology Company · Inventors: Reed, Marion G.
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 present invention provides a method of stabilizing clay soil by mixing an effective amount of dry hydroxy-aluminum and dry base with the clay.
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 December 24, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 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.
FiledOctober 31, 1983
GrantedDecember 24, 1985
Term endedDecember 24, 2002
Patent numberCA 1198275 A
Classification (IPC)C09K17/00 +1 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.