Method of manufacturing an intracutaneous microneedle array
CA 2689890 C · Owner: Sherman, Faiz F. · Inventors: Yuzhakov, Vadim Vladimirovich; Gartstein, Vladimir; Owens, Grover David
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microneedle array is manufactured using a mold preparation procedure that begins try placing an optical mask over a layer of PMMA material exposing the PMMA material to x-rays, then developing using a photoresist process. The remaining PMMA material is then electroplated with metal. Once the metal has reached an appropriate thickness it is detached to become a metal mold that is used in a microembossing procedure in which the metal mold is pressed against a heated layer of plastic material. Once the mold is pressed down to its proper distance the plastic material is cooled until solidified and the mold is then detached, thereby leaving behind an array of microneedles. If the microneedles …
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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 June 7, 2000 and granted September 4, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2022.
- 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.