Method and apparatus for determining a contact area between a probe and a specimen
CA 2267454 A1 · Owner: Lintilhac, Philip M. · Inventors: Outwater, John O.; Lintilhac, Philip M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An optical probe (20) that is transparent contacts a surface (12) of a specimen such that an area of contact is formed. The probe's contact surface (P) has known geometry. By viewing the area of contact through the probe the , area of contact can be determined. The probe may be positioned between the specimen (10) and the objective of a microscope. The microscope and the probe provide a nondestructive and noninvasive instrument to measure the turgor pressure in a cellular specimen. The area of contact between the probe (20) and a cell is a function of the cell's internal pressure. Application of a known force between probe and cell in combination with knowledge of the probe's …
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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 30, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2019.
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Timeline
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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.