STEROIDAL 9,11.beta.-DIHALO (16.alpha.17-B) 1,4-DIOXANES
CA 1055483 A · Owner: E.R. Squibb And Sons · Inventors: Levine, Seymour D.; Cimarusti, Christopher M.; Weisenborn, Frank L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention describes novel steroidal 9,11.beta.dihalo-16.alpha.17-b-1,4-dioxanes, wherein Z is hydrogen hydroxy, , or halogen; X is chlorine or fluorine; A1 is -CH2-CH2- , , , or , ; R1 is, hydrogen, alkyl or aryl; R2 is hydrogen or alkyl; R3 is alkyl, cycloalkyl or aryl; P and Q are independent of each other and are hydrogen, methyl or halogen and the dotted lines in the 1,2 and 6,7-positions represent optional double bonds. These compounds are useful as anti-inflammatory agents.
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
- Granted May 29, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 29, 1996.
- 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.