The use of a multiple dye system to enhance the spectral properties of dyed microparticles in an immunoassay
CA 2423112 A1 · Owner: Manneh, Victor A. · Inventors: Manneh, Victor A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention relates to infrared dyes and their use in microparticles. Specifically, combinations of at least two dyes that absorb in the infrared region of light are used to provide a broad absorption spectrum. The infrared dye composition is incorporated in or on microparticles. The microparticles may subsequently be used in determining the presence of a ligand of interest or physical property of a sample.
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 August 22, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 22, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 2023.
- 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.