Sweetening agents derived from l-glutamic acid and their method of preparation
CA 2066486 A1 · Owner: Tinti, Jean-Marie · Inventors: Tinti, Jean-Marie; Nofre, Claude
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
IN THE UNITED STATES PATENT AND TRADEMARK OFFICE PATENT APPLICATION, entitled: Sweetening agents derived from L-glutamic acid and their method of preparation, in the names of: Claude NOFRE Jean-Marie TINTI, Assignees: Claude NOFRE Jean-Marie TINTI, ABSTRACT OF THE DISCLOSURE The present invention relates to novel sweetening agents. These sweetening agents have the general formula, in which R is a 5,6,7,8-tetrahydro-1-naphthoyl or 1naphthoyl radical, R' is a 2-cyanopyrid-5-yl radical and n is equal to 2. These novel sweetening agents are characterized by an extremely high sweetening potency and a very high stability compatible with all the conditions of industrial use.
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
- Filed April 21, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 21, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 21, 2014.
- 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.