Post-added .alpha.-sulfofatty acid ester compositions and methods of making and using the same
CA 2412252 C · Owner: Huish Detergents, Inc. · Inventors: Huish, Paul Danton; Libe, Pule B.; Jensen, Laurie A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compositions and methods of making compositions comprising .alpha.-sulfofatty acid ester and other detergent components. The .alpha.-sulfofatty acid ester is formed into a first portion, and the other detergent components are formed into a second portion. The first portion is post-added to the second portion.
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 May 18, 2001 and granted January 8, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2023.
- 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.