Methods of making a negative hearing aid mold
CA 2539685 A1 · Owner: Vassserman, Remir M. · Inventors: Stevens, Randal Alan; Vassserman, Remir M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A negative hearing aid mold (10) is made by first processing auditory canal (21) dimension measurement data representing internal dimensions of an auditory canal (21) to generate outside auditory canal dimension data that represents outside dimensions of the auditory canal (21). An impression (22) of the auditory canal (21) is taken from a wearer. The outside auditory canal dimension data is processed to generate outside mold data. A laser (26) is used to measure the dimensions of the impression (22). A negative hearing aid mold (10) is created from the outside mold data using a rapid prototyping such as stereo lithography machine (36). The negative hearing aid mold (10) has an …
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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 September 25, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 25, 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.