Device for wound healing by means of light
CA 2181346 C · Owner: Thiberg, Rolf · Inventors: Thiberg, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for healing wounds and sores with the aid of light including a light emitting element which is intended to lie against or be held close to a wound or sore on the body of an individual and drive means for driving the light emitting element wherein the light emitting element includes light emitting diodes or like devices and is constructed to emit infrared light. The invention is characterized in that the drive means (8, 9, 19) is constructed to cause the light emitting element (1) to emit infrared light in a first stage for a first predetermined length of time and thereafter to emit visible red light in a second stage for a second predetermined length of time; in that the drive …
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 19, 1995 and granted June 5, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 19, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 19, 2017.
- 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.