Patents by Inventor Leo R. Lombardo

Leo R. Lombardo 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).

  • Patent number: 6541777
    Abstract: An ultra violet light sterilizing apparatus includes in one embodiment a fluid chamber, at least one ultraviolet light source configured to emit ultraviolet light into the fluid chamber, and at least one ultraviolet light sensor that includes a photodiode. The photodiode is a silicon carbide photodiode, a gallium nitride photodiode, or an aluminum gallium nitride photodiode. Each UV light sensor includes a sealed outer housing having an optically transparent window. The photodiode is located inside the housing adjacent the transparent window. Each UV light sensor also includes a signal amplification unit that includes an amplifier mounted on a printed circuit board located inside the housing. The UV sterilization apparatus also includes a controller configured to receive, as input, a signal from each ultraviolet light sensor.
    Type: Grant
    Filed: April 13, 2000
    Date of Patent: April 1, 2003
    Assignee: General Electric Company
    Inventors: Leo R. Lombardo, Robert L. Jett
  • Patent number: 6057917
    Abstract: An ultra violet light sterilizing apparatus utilizing a silicon carbide (SiC) photodiode sensor is described. The ultraviolet light fluid sterilization apparatus includes a fluid chamber, at least one ultraviolet light source configured to emit ultraviolet light into the fluid chamber, and at least one ultraviolet light sensor that includes a silicon carbide photodiode. Each UV light sensor includes a sealed outer housing having an optically transparent window. A silicon carbide photodiode is located inside the housing adjacent the transparent window. Each UV light sensor also includes a signal amplification unit that includes an amplifier mounted on a printed circuit board located inside the housing. The UV sterilization apparatus also includes a controller configured to receive, as input, a signal from each ultraviolet light sensor.
    Type: Grant
    Filed: February 26, 1999
    Date of Patent: May 2, 2000
    Assignee: General Electric Company
    Inventors: Carl C. Petersen, Frederick L. Glesius, Greggory A. Schneider, Leo R. Lombardo