Inverted darkfield contrast microscope and method
CA 2243090 A1 · Owner: Richardson, Timothy M. · Inventors: Richardson, Timothy M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel microscope and method of obtaining images includes a combination of the conventional darkfield illuminations technique with electronic image inversion, (converting a positive to a negative image) and other improvements to further enhance the, contrast and resolution of the final image. The microscope and method are referred to herein, as Inverted Darkfield Contrast (IDC) and are believed to be particularly suitable for viewing, live cells in real time with no staining or preparation.
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 July 10, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2020.
- 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.