Patents Assigned to Northern Photonics
  • Optical food oil quality sensor
    Patent number: 6717667
    Abstract: An instrument for measuring reliably and instantaneously the chemical quality of cooking oil, and for distinguishing between color changes due to chemical changes and color changes due to the presence of minute size food particles in various oils.
    Type: Grant
    Filed: January 13, 2003
    Date of Patent: April 6, 2004
    Assignee: Northern Photonics
    Inventors: Varghese Abraham, Sajeev John, Puthenveetil John