Disulfide derivatives useful for treating allergic diseases
CA 2407964 A1 · Owner: Alcon, Inc. · Inventors: Miller, Steven T.; Hellberg, Mark R.; Feng, Zixia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Diphenyl disulfide derivatives of formula (I) wherein X is -NHC(=O)NH-R and R is as defined in the claims are useful for preventing or treating allergic diseases of the eye, nose, skin, ear, gastrointestinal tract airways or lung , and preventing or treating manifestations of systemic mastocytosis. The disulfide derivatives act as mast cell stabilizers.
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
- Filed April 25, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2023.
- 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.