Cutting tool
CA 2047780 A1 · Owner: Hausberger, Peter · Inventors: Hausberger, Peter; Kerber, Benno
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cutting tool, for example, a saw or a drill bit that is used to cut rock, with a metallic carrier body (2) and cutter segments (1) that are secured to this at intervals with a preferably, metallic bond and diamond as the abrasive grain. The cutter segments (1) are heterogeneous in the direction of rotation. As an example, the quality of the abrasive grain and/or the concentration of the abrasive grain varies within the cutter segments (1) to the length of the cutter segment (1) and/or the size of the abrasive grain is different. Ahead of the actual cutter segment (1) there is a damping layer. (Figure 6).
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 July 24, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2013.
- 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.