Patent Yard Sign in
Expired Canadian patentCanada

Method and apparatus for increasing the durability and yield of thin film photovoltaic devices

CA 1207069 A · Owner: The University Of Delaware · Inventors: Phillips, James E.; Lasswell, Patrick G.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

This invention relates to a method and apparatus for detecting the location of shorting defects in thin film semiconductor layers. Thin film photovoltaic cells having a pair of semiconductor layers between opaque and a transparent electrical contacts are manufactured in a method which includes the step of scanning one of the semiconductor layers to determine the location of any possible shorting defect. Upon the detection of such defect the, defect is eliminated to increase the durability and yield of the photovoltaic device.

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

  • Granted July 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 2, 2003.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 24, 1983
GrantedJuly 2, 1986
Term endedJuly 2, 2003
Patent numberCA 1207069 A
Classification (IPC)H01L31/04 +2 more

Timeline

Timeline From CIPO dates

1984198619881990199219941996199820002002Application filedFeb 24, 1983Patent grantedJuly 2, 1986Term endedJuly 2, 2003

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.