Substituted n-phenylcarbodiimides
CA 1234120 A · Owner: Novartis Pharma Canada Inc./Novartis Pharma Canada Inc. · Inventors: Drabek, Jozef; Boger, Manfred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to novel substituted carbodiimides of the formula, wherein, R1 is hydrogen, halogen C1-C10alkyl, C1-C5alkoxy, C1-C5alkoxy which is substituted by 1 to 7 halogen atoms or is C1-C5alkylthio;, R2 is hydrogen, halogen C1-C10alkyl or C1-C5alkoxy;, R3 is hydrogen C1-C10alkyl, halogen, phenoxy, phenylthio or is, phenoxy or phenylthio, each mono- or disubstituted by a member selected from the group consisting of halogen methyl, ethyl, C1-C3haloalkyl containing 1 to 7 halogen atoms and cyano or is, pyridyloxy or pyridyloxy which is mono- or disubstituted by a member selected from the group consisting of halogen and C1-C3haloalkyl containing 1 to 7 halogen atoms; R4 is …
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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
- Granted March 15, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 15, 2005.
- 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.