Process for the machining of stamping parts photochemically etched out of a carrier base, and stamping webs obtained therefrom
CA 2132228 C · Owner: Gerhardt, Jorgen · Inventors: Gerhardt, Jorgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to the machining of cutting (stamping) edges which are etched photochemically out of a carrier base and by means of which labels consisting of label material adhering releasably to a supporting web are to be cut (stamped) as a result of the rolling of the cutting edges of the label material, wherein the cutting edges are given a triangular cross-section having fluted sides by milling by means of a frustoconical milling cutter engaging the longitudinal sides of the cutting edges and rotating about its axis. The invention also relates to cutting edges obtained by the process.
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 September 16, 1994 and granted February 17, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 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.