Oxazolidines containing silane groups
CA 2006727 A1 · Owner: Simon, Hubert · Inventors: Mulhaupt, Rolf; Parrinello, Giovanni; Simon, Hubert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
K- 17397/+, Oxazolidines containing silane groups Abstract of the Disclosure, Compounds of the general formula I (I), wherein, R1 is hydrogen, C1-C12alkyl C5-C7cycloalkyl, phenyl or benzyl, R2 is hydrogen or C1-C4alkyl or, R1 and R2, together with the linking carbon atom form a 5- or 6-membered ring, and, R3, R4 R5 and R6 are identical or different and are hydrogen C1-C12alkyl, phenyl or, phenyl substituted by 1 to 3 members selected from the group consisting of C1-C4alkyl halogen or C1-C4alkoxy or are a group of formula -CH2OR11 where R11 is C1-C12alkyl, phenyl or phenyl substituted by 1 to 3 members selected from the group consisting of C1-C4alkyl, halogen or C1-C4alkoxy, or are -C(O)-R12 …
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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 December 27, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 27, 2011.
- 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.