Expired Canadian patentCanada
Dibenz b,f 1,4oxazepin (and thiazepin)-11 (10h)-ones and-thiones and their use in the prevention or treatment of aids
CA 2024040 C · Owner: Schromm, Kurt · Inventors: Engel, Wolfhard; Schromm, Kurt; Hargrave, Karl D.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is the use of dibenzb,f1,4oxazepin (or thiazepin)-11(10H)-ones and, -thiones in the prevention and treatment of AIDS ARC and related disorders, associated with HIV infection.
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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 August 27, 1990 and granted February 19, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 27, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 27, 1990
GrantedFebruary 19, 2002
Term endedAugust 27, 2010
Patent numberCA 2024040 C
Classification (IPC)A61K31/55 +2 more
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.