Process for cleaning surgical instruments
CA 2305290 A1 · Owner: Chemische Fabrik Dr. Weigert Gmbh & Co. K.G. · Inventors: Tiarks, Petra; Staffeldt, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An enzyme-free cleaning product concentrate containing at least 10 wt % of at least one alkanolamine is used for effectively and gently cleaning surgical instruments. The cleaning product can be used in a cleaning process having the following steps: (a) applying an aqueous solution of 0.5 to 100 % cleaning product concentrate on the instruments; (b) allowing the solution to act at a temperature between room temperature and the boiling temperature of the solution; (c) rinsing.
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 8, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 8, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 8, 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.
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.