6,11-dihydro-5h-pyrido2,3-b1,5benzodiazepin-5-ones and thiones and their use in the prevention or treatment of aids
CA 2014885 C · Owner: Engel, Wolfhard · Inventors: Trummlitz, Gunter; Eberlein, Wolfgang; Hargrave, Karl D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are novel 6,11-dihydro-5H-pyrido2,3b(1,5benzodiazepin-5-ones and -thiones of formula I (see formula I), wherein Z is oxygen or sulfur. These compounds as well, certain known 6,11-dihydro-5H-pyrido2,3-b-1,5benzodiazepin-5-ones are useful in the 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 April 19, 1990 and granted December 26, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 19, 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.
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.