Ultraviolet illumination of indicia
CA 2446630 A1 · Owner: Thompson, James L. · Inventors: Fuwausa, Michelle Jillian; Thompson, James L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An UV emitter (120C) for illuminating indicia associated with dials on watches, gauges and other instruments, as well as ornaments. The indicia is made of a material responsive to UV emissions to render the indicia visible. UV emitters (120c) can be positioned on top of dials with indicia laterally , from the dials, or even under the dials. A conductor arrangement is also provided that can be used to support the UV emitter (120C) under the transparent cover of watches or gauges with the UV emitter (120C) oriented to direct the UV emissions toward the indicia. The indicia illuminated by an UV emitter (120C) may also be used in motor vehicles and other devices.
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 May 3, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2024.
- 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.