Preparation for the sustained release of active substances which are suitable as a therapeutic system or for improving growth and feed utilization in ruminants
CA 2060066 A1 · Owner: Duwel, Dieter · Inventors: Hornykiewytsch, Theophil; Duwel, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Preparation for the controlled release of active substances which are suitable as therapeutics or for improving growth and feed utilization in ruminants. The invention relates to a composition which contains at least one active substance a wax, a weighting agent and optionally a sugar sugar alcohol, cellulose ether or a polyethylene glycol an active substance, release system built up from this composition a process for its, preparation and its use in veterinary medicine and animal nutrition.
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 27, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 27, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 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.
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.