Branched alkyl esters of 4-bis (chloroethyl) aminophenyl-alkyl carboxylic acids for treatment of primary and metastatic tumors of the lymphatic system, and of cancers of the breastand ovaries
CA 2076050 A1 · Owner: Berger, Mitchel S. · Inventors: Soncrant, Timothy T.; Rapoport, Stanley; Ali-Osman, Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of treating malignancies that originate or disseminate to the lymph nodes and lymphatics, breast or ovaries by, administration of compounds of formula (I): in which R1 and R2 are the same or different and are selected from the group consisting of H, F, Cl, Br, and I and R2 can also be NH2; R3 R4 and, R5 are the same or different and are selected from the group consisting of H, F, Cl, Br, I, and C1-C3 alkyl; and n = 0-4.
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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 February 8, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2013.
- 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.