Detection of acoustic nerve tumors
CA 2451929 A1 · Owner: University Technologies International Inc. · Inventors: Dort, Joseph C.; Eggermont, Jos J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of predicting a tumor of the auditory nerve based on the latency of the, auditory brainstem response (ABR) in the presence of a tumor. The ABR is masked, using white noise and derived bands are calculated. The wideband (WB) response is also, recorded. The derived bands are transformed and summed to form a SUM and the, transform of the WB is also taken. The ratio SUM/WB is taken and the result , is, compared to normal ratios to predict the presence of a tumor.
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 December 23, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 23, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 23, 2025.
- 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.