Apparatus for melt spinning feedstock material having a flow restricting ring
CA 2287374 C · Owner: Biovail Technologies Ltd. · Inventors: Perkins, James; Abdi, Mesfin; Bayard, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A spinner head provides (10) for the production of high fat content floss. The spinner head includes a base (12) and a cover (16) spaced from the base. A plurality of discrete spaced apart elongate heating elements (20) are positioned between the base (12) and the cover (16) and define a chamber (25) for accommodating feedstock material therein. The chamber (25) is spun and the feedstock material is heated and is expelled through the spaces (24) between the heating elements (20). Feedstock engagement surfaces are positioned in alignment with each of the spaces (24) between the heating elements (20) so as to engage the expelled feedstock to alter the direction of travel of the …
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 May 4, 1998 and granted October 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 4, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 4, 2020.
- 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.