Method of optical analysis
CA 2033168 C · Owner: Ares-Serono Research & Development Limited Partnership · Inventors: Attridge, John Worthington
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method of optical analysis which can advantageoulsy be used in conjunction with optical assay techniques, particularly those wherein evanescent signals are to be analysed. The method makes use of the properties of an optical structure (described herein) which allows easy angular discrimination of optical signals emerging from a test object. The invention also relates to apparatus for use in said method.
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 June 21, 1990 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 21, 2012.
- 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.