Three-color sensor with a pin-layer sequence or a nip-layer sequence
CA 2251077 C · Owner: Folsch, Joachim · Inventors: Stiebig, Helmut; Knipp, Dietmar; Folsch, Joachim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A structure of several i-layers is limited on one side by a p-layer and on the other side by an n-layer. The structure has means that form said i-layers in such a way that at least in the boundary area between two adjacent i-layers (i?I¿, i?II¿), seen in the light incidence direction the bandgap E¿g? (I) of , the first i-layer (i?I¿) closer to the light input side is larger than the bandgap E¿g? (II) of the second i-layer (i?II¿) adjacent to the first and further removed from the light input side. In addition in the boundary area , between two adjacent i-layers (i?I¿ i?II¿), in the direction from the p-layer to the n-layer, the product µ?(I) of the i-layer (i?I¿) further removed from …
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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 7, 1997 and granted December 10, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 7, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 7, 2019.
- 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.