Patents by Inventor Manuel Oomen

Manuel Oomen 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: 6222312
    Abstract: A fluorescent lamp includes a discharge tube with an ionizable filling which emits ultraviolet light when a discharge occurs, and an inside surface coated with a mixture of three phosphors which emit light in blue-green, green, and red wavelength ranges when exposed to the ultraviolet light. The green and red phosphors are conventional, for example LAP and YOX, while the blue-green phosphor is barium magnesium aluminate activated by europium and manganese (BBG). The BBG has spectra which are similar to those of conventional blue phosphors such as BAM or SCAP, but also emits in the green range from 500-540 nm and augments the LAP which is relatively low in this range.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: April 24, 2001
    Assignee: Philips Electronics North America Corp.
    Inventors: Snehasish Ghosh, Charles Trushell, Manuel Oomen