Apparatus for detecting bubbles in coverslip adhesive
CA 2200444 C · Owner: Kuan, Chih-Chau L. · Inventors: Rosenlof, Mikel D.; Kuan, Chih-Chau L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The detection of bubbles in coverslip adhesive. Bubbles (15 16, 17) in , coverslip adhesive may span large areas of the coverslip (14). An automated cytology system (500) acquires 4x gray scale images (22) of the slide (10). Image conditioning (24) is then performed. The conditioned gray scale image (22) is binomially filtered providing a binomial filtered image (34). The gray scale image (22) is subtracted from the binomial filtered image (34) to produce a high pass enhanced image (36). An object mask detection (26) is then performed on the high pass enhanced image (36). Objects are classified to identify bubble edges.
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 September 8, 1995 and granted August 6, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 8, 2015.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 8, 2017.
- 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.