Expired Canadian patentCanada
Control of cooling water system using rate of consumption of fluorescent polymer
CA 2561863 C · Owner: Yang, Shunong · Inventors: Yang, Shunong; Moriarty, Barbara E.; Xiong, Kun
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 to control a cooling water system based on the rate of consumption of a fluorescent polymer is described and claimed.
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 25, 2005 and granted July 10, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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 25, 2005
GrantedJuly 10, 2012
Term endedApril 25, 2025
Patent numberCA 2561863 C
Classification (IPC)C02F5/10
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.