Extruder and process modifying residence time distribution
CA 2113775 A1 · Owner: Jerman, Robert Edward · Inventors: Miller, Glenn Wallace; Jerman, Robert Edward; Daecher, Jeffrey Lawrence
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for modifying the residence time distribution of materials in an extruder which results in a residence time distribution comparable to that obtained in a continuous stirred tank reactor. An extruder is provided which has a section which modifies the residence time distribution of materials loaded into the extruder.
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 January 19, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2016.
- 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.