Improved solar cell and method of making same
CA 2113446 A1 · Owner: Amick, James A. · Inventors: Amick, James A.; Hanoka, Jack I.; Bottari, Frank J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The cell provided by the invention includes a silicon substrate (20) having a shallow p-n junction (22) adjacent its front surface, a plurality of silver soldering pads (16) bonded to the rear surface (14) of the substrate, an aluminum contact (12) on the rear surface of the substrate having openings (2) that expose at least portions of said silver pads (16) a silver contact (4), surrounded by an antireflection coating on the front substrate and a, glass layer (18) overlying the aluminum contact (12) so as to protect it against oxidation and corrosion. The glass layer (18) has windows (28) exposing portions of the soldering pads for solder attachment of connecting wire ribbons.
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 May 6, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 6, 2015.
- 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.