Expired Canadian patentCanada
Fatty acid stabilized aqueous aerosol foams
CA 1319875 C · Owner: Roydhouse, Francis M. · Inventors: Roydhouse, Richard H.; Roydhouse, Francis M.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An essentially monohydric alcohol free composition able to form a foam. The composition has a propellant, water and a fatty acid. The components are present in ratios that prevent their separation.
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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 July 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 6, 2010.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 19, 1988
GrantedJuly 6, 1993
Term endedJuly 6, 2010
Patent numberCA 1319875 C
Classification (IPC)B01F17/00
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.