Flow distribution plates
CA 2107930 C · Owner: Basf Corporation · Inventors: Hodan, John A.; Ilg, Otto M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Flow distribution plate sets form an element of a spin pack which has a spinneret for spinning synthetic fibers from one or more liquid polymer streams. The plate sets include at least one patterned plate and for each patterned plate at least one boundary plate. The patterned plate has at least one flow distribution pattern stenciled therein by cutting through. The boundary plate is stacked sealingly adjacent to the pattern plate and has cut-through portions to form at least one flow-through channel to allow fluid flow through the patterned plate and solid portions where the patterned plate is cut through to accomplish fluid flow in a direction transverse to the flow in the flow-through …
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 October 7, 1993 and granted July 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2015.
- 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.