Abrasive particles with metallurgically bonded metal coatings
CA 2327634 A1 · Owner: Sherman, Andrew J. · Inventors: Bose, Animesh; Sherman, Andrew J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An abrasive composite particle comprising a cubic abrasive core particle encapsulated within a deposit of hexagonal metallurgical bond forming material comprising at least about 50 volume percent rhenium ruthenium, osmium or , mixtures, thereof. The metallurgical bonds serve to retain the core particle in a matrix/binder, very strongly. Metallurgical bonds are formed by the encapsulating material taking into, solution, at the interface with the cubic abrasive core particle some element , or, compound from the abrasive particle such as for example, carbon or cubic , boron, nitride from the core particle. Chemical bonds are not formed between the abrasive, particle and the deposit. …
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 December 4, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 4, 2022.
- 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.