Canadian application, no grantCanada
Method for inhibiting oil adsorption onto steel mill scale
CA 2302108 A1 · Owner: Ridgeway, James M. · Inventors: Vasconcellos, Stephen R.; Ridgeway, James M.; Mcneill, James S.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of inhibiting the deposition of oil on steel mill scale particles is disclosed. The method comprises adding a nonionic surfactant such as an alkylphenolethoxylate to the mill flume water.
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 March 24, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 24, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 24, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 24, 2000
GrantedNo grant recorded
Term endedMarch 24, 2020
Patent numberCA 2302108 A1
Classification (IPC)C22B1/00 +1 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.