Aminolevulinic acid compounds for diagnosing tumors
CA 2581204 C · Owner: Ishizuka, Masahiro · Inventors: Okura, Ichiro; Ishizuka, Masahiro; Tanaka, Tohru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
According to the present invention, a tumor diagnostic agent which carries out early stage detection, monitoring of therapeutic effect and prognostic diagnosis of , all tumors The tumor diagnostic agent of the present invention is a tumor diagnostic , agent comprising .delta.-aminolevulinic acid represented by formula (I) a , derivative thereof , and a salt thereof R2R1NCH2COCH2CH2COR3 (I), wherein R1 and R2 each independently represents hydrogen alkyl, acyl, alkoxycarbonyl, aryl or aralkyl; and R3 represents hydroxy alkoxy, acyloxy, alkoxycarbonyloxy, aryloxy aralkyloxy or amino, which is used for diagnoses by measuring porphyrins in a , sample collected from the inside or outside of …
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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 September 22, 2005 and granted February 25, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 22, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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
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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.