Oral drug delivery systems
CA 1313620 C · Owner: Tanaka, Makoto · Inventors: Ohkubo, Kazue; Tanaka, Makoto; Okada, Yasunobu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Oral drug delivery systems are provided formed of compositions which include one or more hydrophilic polymers, such as gelatin, sodium carboxymethyl cellulose, carrageenan or sodium alginate or mixtures thereof; an ointment base such as mineral oil containing dispersed polyethylene (Plastibase); and pullulan as a disintegrating agent for the composition. Such oral drug delivery compositions may be used to deliver to the oral mucosa active ingredients such as steroids anti-fungal agents, anti-bacterial agents and the like.
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
- Granted February 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2010.
- 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.