Method for detecting cancer on skin of humans and mammals and arrangement for performing the method
CA 2263125 A1 · Owner: Johansson, Leif · Inventors: Gudmundsson, Fredrik; Johansson, Leif; Wennberg, Ann-Marie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for detecting cancer on skin of humans and mammals by picturing spectroscopy. The method includes that delta aminolevulinic acid ALA is applied on the skin on that area where cancer is suspected to be present, the substance is removed after 1 to 24 hours and the , area is illumiated with light having a wave-length of 330-440 nm and the fluorescent irradiation which arises is registered and evaluated which , radiation has a wave-length 610-715 nm. The invention also includes an arrangement for performing the method.
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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 August 11, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 11, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 11, 2019.
- 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.