Monomer transfer device
CA 2084473 A1 · Owner: Dawson, Todd A. · Inventors: Bryant, Mark A.; Case, Kirt; Dawson, Todd A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The monomer transfer device of this invention includes a syringe adapted to receive an ampule and adapted for connection to a vacuum source such that with the ampule open within the syringe body, the monomer is vacuumed out of the ampule and into the mixing container. Alternative embodiments accept an unbroken ampule and include an offset designed to break the ampule at its predetermined break point to permit the contents of the ampule to be vacuumed from the ampule and transferred to the mixing container. A small mesh filter or screen may be included to any of the ampule before it reaches the mixing container. Once the ampule is inserted into the syringe, an end cap is connected to close …
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 December 3, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 3, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 3, 2014.
- 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.