Cyclophosphamide - sodium bicarbonate lyophilizates
CA 2001552 C · Owner: The Upjohn Company · Inventors: Hutt, Julie A.; Palepu, Nageswara R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A stable rapidly dissolving lyophilized composition of cyclophosphamide and sodium bicarbonate is provided which contains an amount of water which is equimolar to the amount of cyclophosphamide and sodium bicarbonate in said composition; the composition is preferably prepared from a solution containing at least 3% (W/V) weight sodium bicarbonate.
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 26, 1989 and granted July 22, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2011.
- 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.