Expired Canadian patentCanada
Synergistic combinations of ionenes with hexahydro-1,3,5-tris(2-hydroxyethyl)-s-triazine in controlling fungal and bacterial growth in synthetic metalworking fluid
CA 2024989 C · Owner: Hollis, Cecil G. · Inventors: Hollis, Cecil G.; Rayudu, Sreedhar R.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Synergistic combinations of ionene polymers and hexahydro- 1,3,5-tris(2-hydroxethyl)-s-triazine for use in controlling fungal and bacterial growth in synthetic metal working fluids.
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 10, 1990 and granted November 6, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 10, 1990
GrantedNovember 6, 2001
Term endedSeptember 10, 2010
Patent numberCA 2024989 C
Classification (IPC)C08L79/00 +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.