Patents by Inventor Hollis A. Harris

Hollis A. Harris 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).

  • Method of illuminating and providing emergency egress guidance for hazardous areas
    Patent number: 5412544
    Abstract: A method for illuminating explosive, flammable, and other hazardous environments. The method employs electroluminescent lights heaving controlled dielectric strength and capacitance, which when matched with the low current and voltage from an intrinsically safe power supply, and the controlled capacitance of each lighting circuit, produces an emergency lighting system which is both safe and effective.
    Type: Grant
    Filed: August 24, 1993
    Date of Patent: May 2, 1995
    Assignees: Loctite Luminescent Systems, Inc., The MTL Instruments Group plc
    Inventors: Donald E. Derrick, Hollis A. Harris, Robert H. Marion, William A. Tower, L. Christopher Towle