Preparation of additive mixtures for mineral oils and mineral oil distillates
CA 2443418 C · Owner: Clariant Produkte (Deutschland) Gmbh · Inventors: Bettermann, Gerhard; Adams, Curd-Werner; Krull, Matthias
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a continuous process for preparing additive mixtures for mineral oils and mineral oii distillates comprising A) a cold flow improver for middle distillates and at least one further component selected from B) and C): B) a further cold flow improver C) an organic solvent, which comprises mixing cold flow improver and optionally solvent by means of a static mixer the temperature of the additive mixture at the outlet of the static mixer being from 0°C to 100°C.
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 September 30, 2003 and granted June 28, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2025.
- 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.