Process of manufacturing enzyme preparation rich in lipase
CA 1047422 A · Owner: A. Nattermann And Cie. G.M.B.H. · Inventors: Lekim, Dac; Betzing, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Enzyme preparation rich in lipase is obtained by treating comminuted pancreas tissue with a mixture of about 9 parts by volume of chloroform and one part butanol. The partly degreased tissue is then left standing at 0-4°C for 24 to 96 hours. Subsequently, it is degreased through treatment with acetone and is then dehydrated which is followed, by an extraction with a 5% aqueous ethanol solution. The extract is then mixed with acetone, the obtained precipitate is isolated and dried.
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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 January 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 30, 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.