Patents Represented by Attorney, Agent or Law Firm Robert H. Walat
  • Defluoridation of waste water
    Patent number: 6436297
    Abstract: The present invention relates to a method of defluoridation of waste water, including a step of acid neutralization between a basic neutralization step and a decantation step.
    Type: Grant
    Filed: November 24, 1998
    Date of Patent: August 20, 2002
    Assignee: STMicroelectronics S.A.
    Inventors: Jacques Lebeau, Christophe Maury