Patents by Inventor Leonard G. D. Allen

Leonard G. D. Allen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Solar powered monitor
    Patent number: 6624609
    Abstract: A solar powered monitor is powered by a photovoltaic solar module. The monitor measures the electrical output from the solar module and records the length of each interval of time during which the electrical output is below a predetermined value. The length of those intervals is accumulated and periodically displayed to determine the operability of the solar module. The module can be used to provide power for surveillance and for other uses.
    Type: Grant
    Filed: December 13, 2001
    Date of Patent: September 23, 2003
    Inventor: Leonard G. D. Allen
  • Solar powered monitor
    Publication number: 20020070703
    Abstract: A solar powered monitor is powered by a photovoltaic solar module. The monitor measures the electrical output from the solar module and records the length of each interval of time during which the electrical output is below a predetermined value. The length of those intervals is accumulated and periodically displayed to determine the operability of the solar module. The module can be used to provide power for surveillance and for other uses.
    Type: Application
    Filed: December 13, 2001
    Publication date: June 13, 2002
    Inventor: Leonard G.D. Allen