Corrosion inhibiting composition and method
CA 1264539 C · Owner: Morris-Sherwood, Betty J. · Inventors: Brink, Edward C. Jr.; Morris-Sherwood, Betty J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
CORROSION INHIBITING COMPOSITION AND METHOD (D#77,983 -F), ABSTRACT, A composition which is noncorroding to metals in contact therewith includes water, an alkylene glycol and/or a polyoxyalkylene glycol, a polyoxyalkylene amine and substantially no inorganic nitrite. The polyoxyalkylene amine replaces the previously used inorganic nitrite to reduce the toxicity of the noncorroding composition.
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 23, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 2007.
- 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.