Liquid hard surface detergent compositions containing short chain amphocarboxylate detergent surfactant
CA 2109188 C · Owner: Maile, Michael S. · Inventors: Maile, Michael S.; Masters, Ronald A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous, liquid hard surface detergent compositions having good filming/streaking characteristics contain short chain amphocarboxylate detergent surfactant; hydrophobic volatile, cleaning solvent; and, optionally zwitterionic detergent, surfactant and/or monoethanolamine and/or other specific beta-aminoalkanols for improved filming/streaking and good cleaning. Preferred formulas do not contain large amounts of builders and/or other materials that contribute to bad spotting and filming and said formulas are suitable for general purpose cleaning including cleaning of glass.
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
- Filed October 25, 1993 and granted December 23, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2015.
- 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.