Spherical semiconductor device and method of manufacturing same
CA 2269632 C · Owner: Kyosemi Corporation · Inventors: Nakata, Josuke
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A small-diameter spheric solar battery cell SS (spheric semiconductor device ) provided with a spheric core material (1) a reflecting film (2) formed on the , surface of the material (1) a semiconductor thin film layer (a p-type polycrystalline silicon thin film (4a) and n- diffusion layer (7)) formed in a spheric state on the surface of the film (2) an n+-p junction (8) formed in , the semiconductor thin film layer a passivation film (9), a surface , protective film (10) made of a titanium oxide and a pair of electrodes (11a , and 11b) connected to both poles of the junction (8) and a method for manufacturing the cell SS. In addition to the cell SS a spheric crystal , manufacturing …
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 27, 1997 and granted September 2, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 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.