Heterocyclic compounds containing nitrogen as a fuel additive in order to reduce abrasion
CA 2575494 C · Owner: Lange, Arno · Inventors: Lange, Arno; Lockemann, Christian; Posselt, Dietmar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to the use of at least one heterocyclic compound of the , formula (I), (see formula I), in which R is H or C1-C3-alkyl as a frictional wear-reducing additive in fuel compositions; to corresponding additized , fuel compositions and their preparation; and to additive concentrates which comprise , such compounds.
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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
- Filed August 4, 2005 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 4, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.