Method for preventing replication in cryptosporidium parvum using ultraviolet light
CA 2331525 C · Owner: Dussert, Bertrand · Inventors: Dussert, Bertrand; Stevens, R. D. Samuel; Bolton, James R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for preventing the replication of cryptosporidium parvum oocysts and similar organisms comprising irradiating water with a broad band of ultraviolet light in doses from about 10 mJ/cm2 to about 175 mJ/cm2 wherein , said broadband is a frequency of 200 to 300 nm using a medium pressure lamp.
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 May 5, 1999 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 5, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.