Gear lubricant composition
CA 1318658 C · Owner: Di Biase, Stephen A. · Inventors: Tipton, Craig D.; Scharf, Curtis R.; Schwind, James J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2359R, Title: GEAR LUBRICANT COMPOSITION ABSTRACT OF THE DISCLOSURE, Gear oil compositions are described which comprise a lubricating base oil having dissolved therein: (A) at least one phosphite ester characterized by the formula:, wherein R1 and R2 are hydrocarbyl based groups of from 1 to 30 carbon atoms and, (B) at least one metal overbased composition. Another embodiment of the invention comprises the above-mentioned (A) and (B) with, (C) a sulfurization product of an aliphatic olefinic compound containing from 3 to 30 carbon atoms.
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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 June 1, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 1, 2010.
- 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.