Inhibiting agent against the proliferation of malignant tumor cells of animals including human beings and its manufacture
CA 2071094 A1 · Owner: Kato, Haruki · Inventors: Nagasu, Yoichiro; Kato, Haruki; Iijima, Kunihito
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An inhibiting agent against the proliferation of malignant tumor cells of animals including human beings which comprises a mixture of an L-lactic acid straight-chain condensate having a degree of condensation of 5 to 23 and an L-lactic acid cyclic condensate having a degree of condensation of 2 to 15, which mixture is obtained by heating lactic acid under normal pressures or reduced pressure in an atmosphere of an inert gas such as nitrogen gas distilling off the, water present in the monomer first and then the moisture produced in the condensation reaction out of the reaction system dissolving and, dispersing the obtained lactic acid low condensates in methanol equilibrating the dispersion …
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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 June 12, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 12, 2014.
- 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.