Cutting rule and method of cutting corrugated board
CA 2198278 C · Owner: Schickling, Robert A. · Inventors: Schickling, Robert A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for cutting sheet material such as corrugated cardboard (50) with a die cutter (10) so as to reduce the amount of paper dust produced. The die cutter (10) of the present invention utilizes a cutting rule (12) having a base section (14) and a cutting section (16). The cutting rule (12) is characterized by a plurality of serrated teeth (18) extending from the cutting section (16) of the cutting rule (12). Each tooth (18) terminates in a point (22) and has a beveled side face (30). Formed between adjacent teeth (18) is a semi-circular notch (26). The notches (26) extend into the cutting section (16).
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 June 19, 1995 and granted September 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 19, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 19, 2017.
- 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.