Expired Canadian patentCanada
Alcohol resistant aqueous film forming firefighting foam
CA 2063992 C · Owner: Norman, Edward C. · Inventors: Norman, Edward C.; Regina, Anne C.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
AFFF and ARAFFF firelighting foam concentrates which include alkyl polyglycoside surfactants. These surfactants enhance the performance of the perfluoroalkyl surfactants.
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 July 12, 1990 and granted April 25, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 12, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 12, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 12, 1990
GrantedApril 25, 2000
Term endedJuly 12, 2010
Patent numberCA 2063992 C
Classification (IPC)A62D1/04 +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.