Expired Canadian patentCanada
Magnesium carbonate and oil tableting aid
CA 2061998 C · Owner: Madamala, Navayanarao · Inventors: Schuehle, Steve; Wehling, Fred; Madamala, Navayanarao
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 tableting aid including magnesium carbonate and an oil adsorbed thereon provides useful lubricating and disintegration properties,
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 February 27, 1992 and granted August 3, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 27, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 27, 1992
GrantedAugust 3, 1999
Term endedFebruary 27, 2012
Patent numberCA 2061998 C
Classification (IPC)A61K47/44 +2 more
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.