Calcium carbonate granulation
CA 2716449 C · Owner: Delavau L.L.C. · Inventors: Lang, Kevin W.; Dibble, James W.; Levin, Raya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Highly compactable granulations and methods for preparing highly compactable granulations are disclosed. More particularly highly compactable calcium carbonate granulations are disclosed. The granulations comprise powdered materials such as calcium carbonate that have small median particle sizes. The disclosed granulations are useful in pharmaceutical and nutraceutical tableting and provide smaller tablet size upon compression than previously available.
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 July 14, 2004 and granted June 4, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 14, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 14, 2026.
- 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.