Patents by Inventor Santoso Hanitijo

Santoso Hanitijo 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: 5264754
    Abstract: Disclosed is a spark plug for an internal combustion engine including an annular end portion with a central electrode having an end within the annular end portion. A ground electrode extends from the annular end portion and has a portion extending over and spaced a predetermined distance above the end of the central electrode. The improvement comprises the end of the central electrode having cross-grooves therein defining four end faces and the ground electrode having diverging prongs at its end over the central electrode, a portion of each prong being over two adjacent end faces of the central electrode. Improved ignition is provided without critical manufacturing problems of prior art spark plugs.
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: November 23, 1993
    Inventors: Santoso Hanitijo, Jacques L. Giguere