Human leukocyte elastase inhibitors and methods of producing and using same
CA 2001629 A1 · Owner: Khouri, Charles · Inventors: Khouri, Charles; Digenis, George A.; Agha, Bushra J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Compounds selected from the group consisting of a compound of the formula, (I), and a compound of the formula (II), wherein, x is 1 or 2, Y is carbobenzoxy or benzoyl and, XR is, have use as elastase enzyme inhibitors. Particularly potent are the L-proline diastereomers. Elastase Enzyme inhibitory compositions comprise a carrier and an elastase enzyme inhibiting amount of the compounds of the invention. A method of selectively inhibiting the enzyme elastase in an animal or a human in need of such treatment comprises administering to the animal or human an enzyme elastase inhibiting amount of one of the compounds of the invention or a composition thereof. A method of reducing corneal …
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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 October 27, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 27, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 27, 2011.
- 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.