Expired Canadian patentCanada
Catalytic process for manufacture of low pour point lubricating oils
CA 1192518 A · Owner: Mobil Oil Corporation · Inventors: Chester, Arthur W.; Garwood, William E.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to an efficient process for manufacturing a stabilized and dewaxed hydrocracked lubricating oil stock from hydrocarbon feedstock boiling above 343°C using crystalline zeolite ZSM-23 in the dewaxing operation.
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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 August 27, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 27, 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.
FiledApril 18, 1983
GrantedAugust 27, 1985
Term endedAugust 27, 2002
Patent numberCA 1192518 A
Classification (IPC)C10G49/08 +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.