Water-in-oil emulsions
CA 1319673 C · Owner: The Lubrizol Corporation · Inventors: Forsberg, John W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
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Abstract From the Canadian patent
Title: WATER-IN-OIL EMULSIONS, Abstract of the Disclosure A water-in-oil emulsion is disclosed which comprises:, (A) a continuous oil phase; (B) a discontinuous aqueous phase;, (C) a minor emulsifying amount of at least one salt derived from (C)(I) at least one hydrocarbyl-substituted -carboxylic acid or anhydride or, ester or amide derivative of said acid or anhydride the, hydrocarbyl substituent of (C)(I) having an average of from about 20 to about 500 carbon atoms with (C)(II), ammonia, at least one alkali or alkaline earth metal and/or at least one alkali or alkaline earth metal compound; and, (D) a functional amount of at least one water-soluble, oil-insoluble functional additive …
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.
Why it's free to use
- Granted June 29, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 29, 2010.
- 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.