Environmentally preferred fluids and fluid blends
CA 2428588 A1 · Owner: Knudson, George A. · Inventors: Knudson, George A.; Yezrielev, Albert I.; Larson, Thomas M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An industrial formulation-fluid system comprising one or more organic volatile formulation-fluids including a fluid F being a compound containing either an oxygen-containing or nitrogen containing functional group and being substantially free from unsaturated carbon-carbon bonds or aromatic groups. Fluid F is selected from the group consisting of: carbonates acetates, dioxalanes, pivalates, isobutyrates pentanoates, propionates, hexanoates, nonanoates nitriles and mixtures of any two or more thereof such that fluid , F exhibits a reduction in ozone formation in an amount of at least 10 % less than that of the formulation-fluid system without fluid F. Also fluid F has , an ozone …
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 November 7, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 7, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 7, 2023.
- 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.