Canadian application, no grantCanada
Rhamsan gum as mist suppressant in metal working fluids
CA 2251233 A1 · Owner: The Lubrizol Corporation · Inventors: Kalhan, Sanjay; Collins, Edward A.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Metal working compositions which contain rhamsan gum as a mist suppressant exhibit good anti-mist performance and good retention of performance in the presence of prolonged times of shearing.
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 19, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2020.
- 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 19, 1998
GrantedNo grant recorded
Term endedOctober 19, 2018
Patent numberCA 2251233 A1
Classification (IPC)C10M173/00
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.