DAVID M SCHWARTZ
Architects in Fair Oaks, CA
License number
Massachusetts 5394
Issued Date
Sep 15, 1982
Expiration Date
Aug 31, 2014
Type
Architect
Address
Address
Fair Oaks, CA 95628
Professional information
Method Of Making Photovoltaic Cell
US Patent:
8618411, Dec 31, 2013
Filed:
Apr 8, 2009
Appl. No.:
12/420350
Inventors:
David M. Schwartz - Fair Oaks CA, US
International Classification:
H01L 31/18, H01L 31/103, H01L 31/0296
US Classification:
136260, 136264, 136252, 438 89, 438 94, 438 95, 438 98, 438603, 257E31004
Abstract:
A photovoltaic cell is made by coating a metal foil substrate with cadmium telluride powder, moving the powder coated foil across a cold plate or series of cooled rollers to prevent the substrate from melting, while melting the cadmium telluride powder by passing the powder coated foil under a microwave energy source. This forms a thin film of cadmium telluride on the foil. The cadmium telluride coated foil is then coated with cadmium sulfide powder, which is melted by passing the powder coated foil under a microwave energy source, thereby creating a P-N junction, and the cadmium sulfide layer is coated with indium, which is fused to the cadmium sulfide layer by microwave heating.
Suspended Rider Bicycle
US Patent:
8474851, Jul 2, 2013
Filed:
Jul 13, 2012
Appl. No.:
13/548639
Inventors:
David M. Schwartz - Fair Oaks CA, US
International Classification:
B62J 1/28
US Classification:
280290
Abstract:
A suspended rider bicycle has a suspension boom which extends from the frame above the rider's torso, and a suspension device such as a belt or sling for suspending the rider's torso from the suspension boom.