Thiazoline acid derivatives
CA 2250243 C · Owner: University Of Florida Research Foundation, Inc. · Inventors: Bergeron, Raymond J. Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
2-(2-Hydroxy aryl)-thiazoline-4-carboxylic acids and derivatives are useful as chelators of trivalent metals in therapeutic applications. These thiazoline acid derivatives include compounds of the formula;, (see formula I II, III), wherein: R is H or acyl;, R1 R2, R3, R4 and R7 are the same or different and represent H, alkyl or hydrocarbyl arylalkyl having up to 14 carbon atoms, or , wherein, x is 1-10 and y is 0-10; R5 is H, alkyl having up to 15 carbon atoms wherein x is 1-10 and y is, 0-10, or , wherein R1 is as defined above, z is 1-10 arid q is 0-5; R6 is H or acyl;, n is 0-10;, excluding those compounds of formula II: (a) wherein n = 0, R6 is H and R5 is CH3; and (b) wherein n = 0, …
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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
- Filed March 31, 1997 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 31, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 31, 2019.
- 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.