Glycine derivatives
CA 2008116 C · Owner: Alig, Leo · Inventors: Trzeciak, Arnold; Muller, Marcell; Weller, Thomas
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The glycine derivatives of the formula R-CONH-CH2-CONH-CH(R')-CH2COOH I, wherein R is a group of the formula -CH(NH-R a)-(CH2)1-6-NH-R b ~~(R-1), -(T)1 or O-C6H4-CH2NH-R c ~~(R-2) -(T)1 or O-C6H4-(NH)n-C(NH)-L ~~(R-3), or -(T)1 or (see formula I) ~~~(R-4), and R a is hydrogen, -COO-C1-4-alkyl, Z, -COC6H5 -COC6H4N3, -SO2C6H5, -SO2-naphthyl or, -COCH2N(Y)-CH2CH2NH-Y Y is hydrogen, Boc or Z, R b is a group of the formula -C(NH)(CH2)O-3-CH3 or, (see formula II), or, where R a is a group of the formula -COC6H4N3, -SO2C6H5, SO2-naphthyl or, -COCH2N(Y)-CH2CH2NH-Y R b is also amidino, R c is hydrogen or amidino n is the number 1 or 0, L is amino or, where n is the number 1 L is also, -(CH2)O-3-CH3, …
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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 January 19, 1990 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2012.
- 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.