Sulfited fats
CA 1297887 C · Owner: Bosse, Reinhard · Inventors: Bosse, Reinhard; Pieper, Friedrich; Friese, Hans-Herbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Sulfited fats prepared by oxidation of fats with oxygen-containing gas mixtures and simultaneous or subsequent sulfitation using alkali and/or ammonium hydrogen sulfites wherein the fats used are mixtures containing A) fats having iodine numbers below about 100 and B) fatty acid esters having iodine numbers of from about 60 to about 100 and containing from 12 to 24 carbon atoms in the linear or branched natural and/or synthetic fatty acid residue and from 1 to 5 carbon atoms in the monofunctional alcohol residue, the ratio by weight of A) to B) being from about 9:1 to about 1:4. The use of these sulfited fats as oiling agents is described as well as a method for the treatment of leather or …
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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 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.