Tool cylinder situated in a rotary machine processing web-like or plate-like workpieces and process of realisation
CA 2014458 C · Owner: Barben, Martin · Inventors: Grolimund, Kuno; Barben, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a process for manufacturing a tool cylinder which consists of: manufacturing an assembly of segments having inner, lengthwise and lateral surfaces which are machined with precision and of which the outer surface is left in its rough shape, jointly assembling on a carrying cylinder the pre-made assembly of segments thus building up a, new outer cylindrical surface machining on a suitable tool the, cylindrical surface formed by all outer surfaces of the segments fitted on the carrying cylinder.
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 April 12, 1990 and granted September 7, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2012.
- 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.