Patents by Inventor Juri Lahtinen

Juri Lahtinen 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).

  • Method and apparatus for adjusting chemical dosage of pulp processing stage
    Patent number: 6833054
    Abstract: A method and an apparatus for adjusting a chemical dosage of a pulp processing stage. The method comprises measuring a change in a variable in dependence on the chemical dosage and the chemical dosage to be added, and determining a model describing the change in the variable as a function of the chemical dosage. A performance index is determined for the new model to be compared with the performance index of certain previously determined models. The model that produced the best performance index is put to use.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: December 21, 2004
    Assignee: Metso Automation Oy
    Inventors: Juri Lahtinen, Jari Kapanen, Pentti Heino
  • Method of adjusting pulp washing process and determining efficiency
    Publication number: 20040134630
    Abstract: A method of adjusting a pulp washing process and measuring efficiency. The methods comprise modelling the maximum washing capacity of the washing process, selecting the variables of the washing process to be measured, measuring the variables of the washing process, and adjusting the washing process or determining the efficiency of the washing process by means of the modelling and the measurements.
    Type: Application
    Filed: December 8, 2003
    Publication date: July 15, 2004
    Inventors: Juri Lahtinen, Mikko Ulvinen
  • Method and apparatus for adjusting chemical dosage of pulp processing stage
    Publication number: 20030070778
    Abstract: A method and an apparatus for adjusting a chemical dosage of a pulp processing stage. The method comprises measuring a change in a variable in dependence on the chemical dosage and the chemical dosage to be added, and determining a model describing the change in the variable as a function of the chemical dosage. A performance index is determined for the new model to be compared with the performance index of certain previously determined models. The model that produced the best performance index is put to use.
    Type: Application
    Filed: October 15, 2002
    Publication date: April 17, 2003
    Applicant: Metso Paper Automation Oy
    Inventors: Juri Lahtinen, Jari Kapanen, Pentti Heino