Lubricant and fuel additives derived from o,o-dialkyldithiophosphoric acid and a norbornyl reactant
CA 1308727 C · Owner: Lange, Richard M. · Inventors: Di Biase, Stephen A.; Tritt, William C.; Lange, Richard M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
LUBRICANT AND FUEL ADDITIVES DERIVED, FROM O,O-DIALKYLDITHIOPHOSPHORIC ACID AND A NORBORNYL REACTANT, ABSTRACT Reaction products of 5-norbornene-2,3-dicarboxylic anhydride O,O-dialkyldithiophosphate adduct of the formula (I), have been found to be beneficial additives for functional fluids used in the machinery of motorized vehicles. These additives are effective extreme pressure agents and antiwear agents as well as antioxidants for use in such functional fluids as lubricating oils including automatic transmission fluids and hydraulic fluids.
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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 October 13, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 13, 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.