Patents by Inventor Adrian J. Exell

Adrian J. Exell 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).

  • Fluorescent lamp for use in aquaria
    Patent number: 5539276
    Abstract: A fluorescent lamp produces light having color coordinates within an ellipse (A) about 22 standard deviation of color matching around the color coordinates (b)x=0.344 y=0.302. The luminescent layer of the lamp includes a mixture of: magnesium fluorogermanate activated by manganese as red emitter; calcium halophosphate as white emitter; and a blue emitter preferably strontium pyrophosphate activated by divalent tin. The layer may alternatively be a mixture of red emitting magnesium fluorogermanate and blue emitting barium titanium pyrophosphate. Other blue emitters are also described.
    Type: Grant
    Filed: May 13, 1994
    Date of Patent: July 23, 1996
    Assignees: General Electric Company, Interpet Limited
    Inventors: Adrian J. Exell, Milroy G. Abeywickrama, Martin P. A. Baines