Imidazo-as-triazine derivatives
CA 1097638 A · Owner: American Cyanamid Company · Inventors: Paul, Rolf; Walworth, Bryant L.; Menschik, Judith
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to new organic compounds and processes for preparing the1n. In particular the present invention is concerned with novel substituted imidazo1,5-d-as-triazin-4(3H)-ones and thiones as represented by the structural formula: wherein X is divalent oxygen or divalent sulfur; R1 is hydrogen alkyl C1-C3, bromo, chloro, iodo or haloalkyl C1-C3; R2 is hydrogen alkyl C1-C6, cyclo-, alkyl C3-C6, methoxymethyl benzyl, naphthyl, or phenyl optionally substituted with halogen, alkyl C1-C4, alkoxy C1-C4 haloalkyl C1-C3, amino, dialkylamino, and nitro; R3 is selected from the group conslsting of hydrogen alkyl C1-C3, alkenyl C3-C4 and alkynyl C3-C4;. R4 is selected from the …
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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 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 1998.
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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.