Method for modifying medical materials of lactic acid polymers
CA 2034482 C · Owner: Ikada, Yoshito · Inventors: Saito, Yoshikiyo; Suzuki, Masakazu; Suon, Hyu Hyon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method for modifying a medical material of lactic acid polymer, the method comprising heat-treating the material at a temperature which is not lower than 100°C and is lower than the melting point of the polymer for at least 10 minutes while continuously releasing the gas from the system.
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 June 20, 1990 and granted January 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 2012.
- 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.