Process for manufacturing sustained release microbeads containing venlafaxine hci
CA 2507685 A1 · Owner: Shah, Maya Janak · Inventors: Antarkar, Amit Krishna; Lala, Rajendra Ghanshamlal; Shah, Maya Janak
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to viable continuous process for manufacture of agglomeration free, high yield (generally atleast about 95% w/w) uniformly , shaped and sized, stable novel pharmaceutical composition of adequate strength comprising upto about 70%w/w of Venlafaxine or its pharmaceutical acceptable salt which is free of organic acid for once a day dosing. Sustained release composition comprising of Venlafaxine HCI provides pH independent release of Venlafaxine HCI atleast for a period of 10 hours without any latent period and can be encapsulated in smallest capsule size 5 for therapeutic effective of Venlafaxine thus providing patient easy to consume dosage form.
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 November 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 17, 2025.
- 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.