Chemical peeling of edible plant products
CA 1048853 A · Owner: Basf Wyandotte Corporation · Inventors: Aepli, Otto T.; Curtis, Daniel B.; Sorgenfrei, Malachy E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The outer layers of edible plant products are removed by contacting the products with an aqueous alkaline caustic solution containing from about 1 to 30 weight percent caustic and from 0.05 to 1.00 weight percent based on the, total weight of solution of an anionic surfactant or mixture, thereof corresponding to the formula: wherein R is an alkyl or alkaryl group having from 8 to 18 carbon atoms in the alkyl chain, B is hydrogen or R-O-A- and A is either oxyethylene or a mixture of oxyethylene and oxypropylene groups wherein the weight ratio of oxyethylene to oxypropylene is 0.25:1 to 8:1 and the total oxyethylene and/or oxypropylene groups represent from about 30% to 80% of the total …
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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 February 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 20, 1996.
- 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.