T-landed insert
CA 2254233 A1 · Owner: Patterson, John · Inventors: Coleman, Robert; Patterson, John; Cannizzaro, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polygonal cutting insert of hard, wear resistant material comprising radiused corners, at, least one pair of cutting edges comprising a lead cutting edge and a finish cutting edge, sharing a common corner, and a land beginning in an area corresponding to an approximate midpoint along the lead cutting edge and substantially parallel to the lead, cutting edge being curved at the common corner and intersecting the finish cutting edge in, an area of the tangent point of the radiused corner on the finish cutting edge.
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 November 16, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 16, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2020.
- 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.