Coating process
CA 1047827 A · Owner: Unilever Limited · Inventors: Barwick, Bryan E.; Sneath, Michael E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Damage and inconvenient splashing when an object with at least a coating of a settable or hardenable liquid is dropped or thrown into a liquid setting or hardening agent is reduced or even eliminated by foaming the surface of the liquid setting or hardening agent. Foaming can be achieved in a preferred form of the invention by bubbling air under the surface of the liquid to ensure constant breaking of the surface of the liquid.
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 February 6, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 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.