Canadian application, no grantCanada
Aqueous composition for the chemical removal of metallic surfacing present on turbine blades, and its use
CA 2501304 A1 · Owner: Kool, Lawrence · Inventors: Stefanelli, Marco; Anselmi, Marco; Kool, Lawrence
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous composition for the chemical removal of metallic surfacing present on the blades of turbines, preferably gas turbines comprises at least , hexafluorosilicic acid and phosphoric acid.
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 October 1, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 1, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 1, 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.
FiledOctober 1, 2003
GrantedNo grant recorded
Term endedOctober 1, 2023
Patent numberCA 2501304 A1
Classification (IPC)C23F1/44 +2 more
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.