Canadian application, no grantCanada
Method for the inactivation of cryptosporidium parvum and giardia cysts using ultraviolet light
CA 2372427 A1 · Owner: Calgon Carbon Corporation · Inventors: Bolton, James R.; Dussert, Bertrand; Stevens, R. D. Samuel
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 for the inactivation od <i>Cryptosporidium</i> oocysts Giardia cysts , and similar organisms comprising irradiating water with ultraviolet light in doses of from about 1 mJ/cm2 to about 175 mJ/cm2.
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 April 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 27, 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.
FiledApril 27, 2000
GrantedNo grant recorded
Term endedApril 27, 2020
Patent numberCA 2372427 A1
Classification (IPC)C02F1/32 +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.