Compositions containing active sulfur
CA 1340486 C · Owner: Scharf, Curtis R. · Inventors: Scharf, Curtis R.; Vinci, James N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition useful as a lubricant or cutting fluid includes: an oil of lubricant viscosity; the adduct of a polycarboxylic compound such as hydrocarbyl-substituted succinic anhydride with a hydroxy-containing amine; an active sulphur-containing organic compound such as a sulfurized olefin; and an alkali metal- or alkaline earth metal-containing compound. The composition exhibits reduced hydrogen sulfide generation.
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 April 6, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2016.
- 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.