Method and apparatus for the transport of a homogeneous mixture of chopped fibers
CA 2059459 A1 · Owner: Shell Internationale Research Maatschappij B.V. · Inventors: Hjerstson, Hans O.; Nathoo, Nazim S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus are disclosed for the transport of a mixture of chopped fibers wherein the, fibers remain in a homogeneously mixed condition during their transport from a chopper gun to a workpiece, by use of two transvectors placed in series with a conduit attached therebetween. PS22017
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 16, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 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.