Acid salts of n-n-(3,3-dimethylbutyl)-l-.alpha.-aspartyl-l-phenylalanine 1-methyl ester
CA 2303436 A1 · Owner: Nutrasweet Property Holdings, Inc. · Inventors: Wachholder, Kurt L.; Prakash, Indra
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Dipeptide sweeteners are disclosed that are salts of N-N-(3,3-dimethylbutyl)- L-.alpha.-aspartyl-L-phenylalanine 1-methyl ester represented by formula (I) wherein X- is selected from the group consisting of Cl- HSO4-, H2PO3-, citrate, HCO3-, furmarate malate, maleiate, tartarate, acetate, benzoate or gluconate. Also disclosed is a liquid low-calorie sweetener container such salts.
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 September 11, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 11, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 2020.
- 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.