Biodegradable polyesteramides with aliphatic-aromatic structures
CA 2320846 A1 · Owner: Grigat, Ernst · Inventors: Schulz-Schlitte, Wolfgang; Idel, Karsten-Josef; Grigat, Ernst
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Statistically structured biodegradable aliphatic-aromatic polyesteramides comprising the following monomers: aliphatic dialcohols such as ethylene glycol, diethylene glycol, 1-4-butandiol 1,3-propandiol, 1,6-hexandiol or , cycloaliphatic diols such as cyclohexandimethanol and/or aliphatic dicarboxylic acid such as oxalic acid, succinic acid adipic acid, etc. also , in the form of the corresponding esters (methyl ethyl, etc.) and/or aromatic , dicarboxylic acids such as terephthalic acid isophthalic acid, phthalic acid, etc. also in the form of the corresponding esters (methy ethyl, etc.) and/or , hydroxycarboxylic acids and lactone such as caprolactone etc. and/or amino , alcohols such as …
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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 February 6, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 6, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 2021.
- 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.