Photo electronics pulsate vision fatigue curing device
CA 2133668 A1 · Owner: Chen, Qing Sheng · Inventors: Chen, Qing Sheng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The vision fatigue curing device I invented generates a preset frequency of photo pulses as well as a preset frequency and amplitude of electrical pulses to massage and stimulate human vision's nerve system and nerve tips in muscles surrounding our eyes so as to yield the following treatment results: (1) Improve circulation, blood supplies within the related blood vessels. (2) Alternatively excite and relax eye muscle to recover its refraction regulation function and as a treatment to vision fatigues. (3) Prolonged usage can stimulate our vision system to regulate the depth of the front room of the eye balls, shorten the diameter of the eyeballs. i.e. improve vision recovery from myopia or …
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 October 5, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2016.
- 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.