Lubricant additive comprising mixed hydroxyester of diol/phosphorodithioate-derived borates
CA 1320214 C · Owner: Mobil Oil Corporation · Inventors: Farng, Liehpao Oscar; Horodysky, Andrew Gene
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides reaction products produced by (a) reacting a phosphorodithioic acid and an epoxide hydroxyester, or diol resulting in an intermediate product; and (b) reacting the intermediate product with a bosating compound and a hydroxy-bearing compound to produce the desired reaction product said reactions being conducted at a temperature of from -10°C to 250°C for 1 to 48 hours.
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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 July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 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
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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.