Moisture-scavenging iminoalcohol-oxazolidine mixtures
CA 2115562 A1 · Owner: Chou, Chih-Yueh · Inventors: Nocito, Vincent; Chou, Chih-Yueh; Malocha, Robert E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A moisture-scavenging composition including a mixture of moisture scavenging compounds, wherein the mixture consists of from 0 to 100 mole percent of an iminoalcohol compound wherein: R1 is a methyl or methyol group an ethyl or, ethylol group, a branched or straight chain alkyl or alkanol group, a cycloalkyl group, or an aryl group; R2 is a hydrogen atom, a methyl or methylol group, and ethyl or ethylol group a straight chain or branched chain alkyl or alkanol group a, cycloalkyl group, or an aryl group, or R1 and R2 are fused together with the attached carbon to form a cycloalkane ring: R3, R4 and R5 are, individually, a hydrogen atom a methyl or, methylol group, an ethyl or ethylol group …
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 June 25, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 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.