Method and apparatus for enhanced nano-spectroscopic scanning
CA 2521016 C · Owner: Vp Holding, Llc · Inventors: Poponin, Vladimir
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and method for examining the identity of chemical groups in a sample (82) are disclosed. The apparatus (35) has a substrate (80) having a plasmon resonant surface on which the sample (82) is supported a source of a beam of , light (10), and a lens assembly (60) having a tip region and a nanolens (62) composed of one or more plasmon resonance particles (PRPs) on the tip region. The PRPs are arranged to produce near-field electromagnetic gap modes in a space between the nanolens (62) and a confronting detection region on the substrate surface (80) when the gap between the nanolens (62) and the substrate (80) is 30 nm or less. A focusing mechanism in the apparatus operates to …
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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 April 5, 2004 and granted September 18, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 5, 2026.
- 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
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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.