Pretreatment of sample for endotoxin measurement
CA 2087476 C · Owner: Wako Pure Chemical Industries Ltd. · Inventors: Harada, Kazuaki; Tsuchiya, Masakazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A pretreating method for a sample such as plasma for endotoxin measurement comprising diluting the sample with a surfactant-containing aqueous solution and, subjecting the diluted sample to heat treatment can prevent influences of inhibitors, etc. present in the sample and gives high recovery of endotoxins.
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 January 18, 1993 and granted April 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 18, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 18, 2015.
- 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.