Process for overbasing via metal borate formation
CA 1295987 C · Owner: The Lubrizol Corporation · Inventors: Steckel, Thomas Frier
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2355R, Title: PROCESS FOR OVERBASING VIA METAL BORATE FORMATION, Abstract of the Disclosure, A process of preparing an overbased composition by the reaction of oil soluble organic acids with oxides or hydroxides of, e.g. zinc, copper, cadmium transition, metals, etc. to form a salt. Additional oxides or hydroxides are added along with boric acid and promoters. These overbased metal borates are useful in lubricating oils and fuels.
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 February 18, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2009.
- 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.