Expired Canadian patentCanada
Sand containing flux
CA 1074676 A · Owner: W.R. Grace And Co. · Inventors: Vastag, Joseph
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Zinc ammonium chloride type fluxes can be made that have longer life and reduced smoke characteristics by incorporating 1 to 50% sand into conventional fluxes for use on metal container side seam soldering baths as well, as into galvanizing fluxes.
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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 April 1, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 1, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedApril 1, 1980
Term endedApril 1, 1997
Patent numberCA 1074676 A
Classification (IPC)C23C2/30 +1 more
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.