Patents by Inventor Ora Marie Henkes

Ora Marie Henkes 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).

  • Control of leachable mercury in fluorescent lamps
    Patent number: 6229260
    Abstract: The formation of leachable mercury upon disposal in a landfill or during TCLP testing of mercury vapor discharge lamps is substantially prevented by incorporation of an amount of dehydroascorbic acid or a degradation product of dehydroascorbic acid which is effective to substantially prevent formation of ferric and cuprous compounds responsible for forming leachable mercury compounds.
    Type: Grant
    Filed: November 27, 1998
    Date of Patent: May 8, 2001
    Assignee: General Electric Company
    Inventors: Deborah Ann Haitko, Donald Franklin Foust, David Key Dietrich, Ora Marie Henkes