Expired Canadian patentCanada
Defoaming compositions based on lithium salts
CA 1084803 A · Owner: Basf Wyandotte Corporation · Inventors: Otrhalek, Joseph V.; Gansser, Robert E.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure, Aqueous cleaning compositions incorporating lithium salts to inhibit foaming. -1-
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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 September 2, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 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.
FiledSeptember 30, 1976
GrantedSeptember 2, 1980
Term endedSeptember 2, 1997
Patent numberCA 1084803 A
Classification (IPC)C23G1/00 +2 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.