Patents by Inventor Sita Ruby Warren

Sita Ruby Warren 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).

  • Process for controlling a digester using real time measurement of moisture content and species of wood
    Patent number: 6447639
    Abstract: An on-line pulp digester control system. More particularly, this invention pertains to a control system which employs real time measurements from ion mobility spectrometry to automatically rapidly and continuously determine the physical and chemical characteristics of wood chip feedstock being fed into a pulp digester and thereby maximize process efficiencies, minimize chemical and energy consumption and improve product uniformity.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: September 10, 2002
    Inventors: Sita Ruby Warren, Douglas John McKenzie
  • PROCESS FOR CONTROLLING A DIGESTER USING REAL TIME MEASUREMENT OF MOISTURE CONTENT AND SPECIES OF WOOD
    Publication number: 20020121349
    Abstract: This invention relates to a novel on-line pulp digester control system. More particularly, this invention pertains to a novel control system which employs real time measurements from ion mobility spectrometry to automatically rapidly and continuously determine the physical and chemical characteristics of wood chip feedstock being fed into a pulp digester and thereby maximize process efficiencies, minimize chemical and energy consumption and improve product uniformity.
    Type: Application
    Filed: March 5, 2001
    Publication date: September 5, 2002
    Inventors: Sita Ruby Warren, Douglas John McKenzie