Low-melting moldable pharmaceutical excipient and dosage forms prepared therewith
CA 2000697 A1 · Owner: Snipes, Wallace C. · Inventors: Snipes, Wallace C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An excipient for a pharmaceutical compound which melts at body temperature but will not spontaneously deform at higher temperatures encountered in shipment and storage comprises:, Low MW Polyethylene glycol 75 - 90 % (M.P. about 37°C), Medium to high MW polyethylene glycol 0 - 4 % Long chain saturated carboxylic acid 0 - 4 % Polyethylene oxide 0 - 4 %, (MW 100,000 - 5,000,000) Colloidal silica 10 - 20 %. The excipient is particularly advantageous for the preparation of dosage forms for buccal administration of pharmaceutical compounds.
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 October 13, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2011.
- 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.