Curette sharpening hone and method of making
CA 1325111 C · Owner: Bifulk, Edward James · Inventors: Bifulk, Edward James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dental curette hone of a ceramic made from particulate aluminum oxide abrasive and having a curved alongate edge and a flat elongate surface. The curved elongate edge has a radius of approximately 1/32 to about 3/32 inch. The ceramic block is being made by forming a mixture of particulate aluminum oxide having an irregular particle shape and a selected particle size with magnesium oxide, then shaping each block by extrusion or molding. The block is then heated to form a fused ceramic block. The fule ceramic block is tumbled to remove irregularities from the elongate edge and flat surface after which the block is polished to form a polished surface on exposed particles of aluminum oxide. …
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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
- Granted December 14, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 14, 2010.
- 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.