Aqueous fluids
CA 1294511 C · Owner: Kech, Fernand J. · Inventors: Kech, Fernand J.; Lenack, Alain L.P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous fluids having a good combination of anti-bacterial properties, stability in hard water a reduced foaming tendency in soft water and at times a reduced boron content are obtained by the use as additive of a combination of a water-soluble hydroxy di- or tri- carboxylic acid and an excess of an alkanolamine, additive concentrates for incorporation into the aqueous fluids and the aqueous fluids themselves.
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 January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 2009.
- 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.