Process for the preparation of carnitine chloride
CA 1186332 A · Owner: Sigma-Tau Industrie Farmaceutiche Riunite S.P.A · Inventors: Bagolini, Carlo A.; Tinti, Maria O.; Quaresima, Emma T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
D-L carnitine is converted into D,L-carnitine chloride by treating it, without previously protecting the hydroxyl group, with a halogenating agent at room temperature for a reaction period comprised between 1.5 hours and 12 hours. If the foregoing reaction conditions are not strictly complied with, a sharp decrease in the yield and the formation of by-products, primarily crotonoyl-betaine will take, place.
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 April 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2002.
- 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.