Articles including passivated metal particles and their production
CA 1065696 A · Owner: Western Electric Company, Incorporated · Inventors: Robbins, Murray; Schonhorn, Harold; Chandross, Edwin A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Long term protection against oxidation is provided to fine particles of oxidizable metals and metallic alloys by treating the essentially oxide-free particles with a solution of certain organic materials in a nonreactive organic solvent. These organic materials are ureas thioureas, isocyanates or isothiocyanates with at least one organic substituent each containing at least two carbons. Particles of both hard and soft magnetic metals and alloys have been protected by this treatment.
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
- Granted November 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 6, 1996.
- 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.