Fibre-optic apparatus for the photodynamic treatment of tumours
CA 2033673 C · Owner: Monnier, Philippe · Inventors: Van Den Bergh, Hubert; Wagnieres, Georges; Monnier, Philippe
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bronchoscope has a fibre-optic apparatus for the photodynamic treatment of tumours in, the region of the furcate branches of the bronchi the divergent pencil of , rays (13), which emerges from the end face (4) of an optical fibre striking a lens arrangement , consisting of two microlenses (14, 15) which, owing to the spherical aberration deflect , edge rays (23), in the divergent pencil of rays (13) of the optical fibre (8) in such a manner that a, homogeneous sharp-edged emerging pencil of rays is formed.
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 January 7, 1991 and granted November 20, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 7, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 7, 2013.
- 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.