Sulfonate surfactants
CA 1262145 C · Owner: Ries, Donald G. · Inventors: Ries, Donald G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is directed to novel sulfonates having the following structural formula:, where in the above formula R is a C6 - C20 hydrocarbon or, substituted hydrocarbon group R' is from the group consisting, of hydrogen or lower alkyl radicals of from 1 - 4 carbon atoms x is an integer having the value between 0 - 50 y is an, integer within the range of 1 - 5 and M is a metal cation. The novel sulfonates are valuable anionic surfactants and find application in stimulating oil wells, in production of detergents for industrial and home use and as emulsion, breakers.
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 October 3, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 3, 2006.
- 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.