Vanadium (iv) oxide bis (dialkyldithiocarbamates) and process for their preparation
CA 2079203 A1 · Owner: Franke, Friedrich · Inventors: Franke, Friedrich; Himmelreich, Rolf; Spiess, Wolfram
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Vanadium(IV) oxide bis(dialkyldithiocarbamates) of the general formula, I, in which R denotes identical or different branched or straight-, chain, saturated or unsaturated alkyl radicals having 1 - 18 carbon atoms or cycloalkyl radicals having 4 - 7 carbon atoms and a process for their preparation, in which process 2 mols of an alkali metal dialkyldithiocarbamate of the general formula II, in which R and R1 are as defined in claim 1 and Me represents sodium, potassium or ammonium, are reacted with 1 mol of vanadium(IV) oxide sulfate: pentahydrate in methanol or water as solvent. The novel vanadium dithiocarbamates can be used as additives for permanent gear lubrication oils or hydraulic …
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 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 2014.
- 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.