Apparatus and method for manufacturing encapsulated products
CA 2464759 C · Owner: Burnett, Stephen W. · Inventors: Sundararajan, Mani; Tanner, Keith; Walker, David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to a method and apparatus for forming soft capsules and provides novel processing flexibility. The apparatus includes extrusion die (130) as an alternative to spreader boxes the use of melt-on-demand , technology to enhance the long term stability of the film-forming materials and a casting drum (9). Preferred embodiments provide a positive displacement pump to transport the molten film-forming material from the melt-on-demand device to the extrusion device (130) and preferably a reservoir means disposed between said extrusion device (130) and the means to melt said film-forming material. The encapsulation apparatus may also include a valved injection wedge.
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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 October 28, 2002 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2024.
- 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.