Method for forming and denaturing particles
CA 2090657 C · Owner: Research Development Corporation Of Japan · Inventors: Misawa, Hiroaki; Kitamura, Noboru; Ishikawa, Masazumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Laser beam is irradiated to polymer solution; polymer particles are formed in the focal area thereof; and the formed particles are trapped to transportation processing and modification. Particles caused to disappear by discontinuing light irradiation. It is possible to achieve advance control of particles dynamic patterns through light-induced phase transition.
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 March 1, 1993 and granted December 31, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 1, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 1, 2015.
- 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.