Estradiol derivatives and a radio-immunoassay method utilizing thereof
CA 1097610 A · Owner: Daiichi Radioisotope Laboratories Limited · Inventors: Ogawa, Hiroshi; Tsushima, Shoichiro; Nakazawa, Nobuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Estradiol derivatives of the for? wherein R represents tyrosine residue, tyrosine lower alkyl ester residue, radioiodinated tyrosine residue or radioiodinated tyrosine lower alkyl ester residue; and a radioimmunoassay method using estradiol-6-(0-carboxymethyl)oxime radioiodinated tyrosine as the tracer.
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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
- Granted March 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.