Distillate fuel composition containing combination of silver corrosion inhibitors
CA 2174171 C · Owner: Exxon Research And Engineering Company · Inventors: Poirier, Marc-Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A distillate fuel composition for reducing silver corrosion in two-cycle internal combustion engines which comprises motor gasoline a lubricating oil basestock and a combination of a 2,5-dihydrocarbyldithio-1,3,4- thiadiazole of the formula wherein R1 and R~ are independently R3S or H where R3 is a hydrocarbyl group containing from 1 to 16 carbon atoms with the proviso that at least one of R1 and R~ is not hydrogen and an adduct of benzotriazole or tolyltriazole and an alkoxyamine.
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
- Filed April 15, 1996 and granted June 10, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 15, 2018.
- 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.