Synergistic combination of alkali metal borates, sulfur compounds, phosphites and neutralized phosphates
CA 1290740 C · Owner: Chevron Research And Technology Company · Inventors: Salentine, Christopher G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It has been found that a lubricating oil containing: (1) an alkali metal borate; (2) an oil-soluble sulfur compound; (3) a dialkyl hydrogen phosphite; and (4) a mixture of neutralized phosphates said phosphates being essentially free of monothiophosphates interacts synergistically to provide a lubricant with superior load carrying properties.
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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.