Oral delivery systems for microparticles
CA 2084194 C · Owner: Russell-Jones, Gregory John · Inventors: Russell-Jones, Gregory John; Westwood, Steven William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There are disclosed complexes and compositions for oral delivery of a substance or substances to the circulation or lymphatic drainage system of a host. The complexes of the invention comprise a microparticle coupled to at least one carrier the car-, rier being capable of enabling the complex to be transported to the circulation or lymphatic drainage system via the mucosal ep- ~ ithelium of the host, and the microparticle entrapping or encapsulating or , being capable of entrapping or encapsulating the , substance(s). Examples of suitable carriers are mucosal binding proteins bacterial adhesins, viral adhesins, toxin binding subunits, lectins, Vitamin B12, and analogues or derivatives …
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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 April 2, 1992 and granted May 20, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 2, 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.