High tbn, low viscosity, group ii metal overbased sulfurized alkylphenols
CA 1341002 C · Owner: Chevron Research And Technology Company · Inventors: Liston, Thomas V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oil-soluble, Group II metal overbased sulfurized alkylphenol characterized as possessing a Total Base Number of from about 300 and greater, a viscosity of about 800 centistokes or less at 100°C and containing less than about 10 mole percent of unsulfurized Group II metal alkylphenol in the actives.
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 May 30, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 30, 2017.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.