Erodable agglomerates and abrasive products containing the same
CA 1253348 A · Owner: Minnesota Mining And Manufacturing Company · Inventors: Duwell, Ernest J.; Bloecher, Ulrich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to erodable agglomerates containing abrasive grains and to abrasive products containing these agglomerates. Conventional coated abrasives typically consist of a single layer of abrasive grain adhered to a backing. It has been found that only up to about 15% of the grains in the layer are actually utilized in removing any of the workpiece. It follows then that about 85% of the grains in the layer are wasted. Furthermore, the backing one of, the more expensive components of the coated abrasive must also be disposed of before the end of its useful life. This invention provides erodable agglomerates containing individual abrasive grains, a binder and matrix material …
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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 May 2, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 2, 2006.
- 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.