Corrosion-inhibited antifreeze formulation
CA 1310486 C · Owner: Texaco Development Corporation · Inventors: Van Neste, Walter Antoon; Darden, Jerome Winn; Triebel, Carol Ann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
CORROSION-INHIBITED ANTIFREEZE FORMULATION (D#71,000-TF-151-F), ABSTRACT, A corrosion-inhibited antifreeze concentrate formulation containing no phosphate, amine, or nitrite compounds consists essentially of:, (a) a major amount of a water soluble liquid alcohol freezing point depressant;, (b) from 0.1-5.0 weight percent of a C6-C12 aliphatic monobasic acid or the alkali metal salt thereof; (c) from 0.1-5.0 weight percent of an alkali metal borate compound; and, (d) from 0.1-0.5 weight percent of a hydrocarbyl triazole. The concentrate formulation and aqueous antifreeze formulations of the instant invention give synergistic corrosion protection for a variety of metal surfaces as compared …
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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 November 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 24, 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.