Aqueous folinate solution - stable at refrigerator temperature, as well as process for its preparation
CA 2018230 C · Owner: Nijkerk, Alfred James · Inventors: Vermeer, Johanna Maria Pieternella; Nijkerk, Alfred James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous folinate solution stable at refrigerator temperature is provided which contains folinate ions, complexed calcium ions and if, desired free calcium ions in a total amount of more than 12 mg/ml as, well as anions of a complexing agent for calcium. This solution is prepared by incoporating the complexing agent therein.
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 June 4, 1990 and granted April 16, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 4, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 4, 2012.
- 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.