Patents Assigned to Liqum Paper Oy
  • Patent number: 7200461
    Abstract: The invention relates to a method for monitoring and analyzing a production process. In the method, a large number of variables are measured from the process, with the aid of these variables, fingerprints according to a good and a poor process situation, relative to runnability, are defined in several sub-processes and are then stored in a memory, the stored fingerprints are compared with fingerprints obtained in a normal process situation, on the basis of the comparison, the difference, displayed graphically to the user, between the recorded good situation and the momentary process situation is defined.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: April 3, 2007
    Assignee: Liqum Paper Oy
    Inventor: Sakari Laitinen-Vellonen
  • Patent number: 7181308
    Abstract: The invention relates to a method for monitoring and analyzing a production process. In the method, a large number of variables are measured from the process, with the aid of these variables, fingerprints according to a good process situation, relative to runnability, are defined in several sub-processes and are then stored in a memory, the stored fingerprints are compared with fingerprints obtained in a normal process situation, on the basis of the comparison, an index of the difference, displayed graphically to the user, between the recorded good situation and the momentary process situation is defined, and a runnability index, depicting the runnability of the entire paper machine and a quality index depicting the quality of the paper produced, are formed from these indices.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: February 20, 2007
    Assignee: Liqum Paper Oy
    Inventor: Sakari Laitinen-Vellonen
  • Publication number: 20060079986
    Abstract: The invention relates to a method for monitoring and analyzing a production process. In the method, a large number of variables are measured from the process, with the aid of these variables, fingerprints according to a good and a poor process situation, relative to runnability, are defined in several sub-processes and are then stored in a memory, the stored fingerprints are compared with fingerprints obtained in a normal process situation, on the basis of the comparison, the difference, displayed graphically to the user, between the recorded good situation and the momentary process situation is defined.
    Type: Application
    Filed: October 23, 2003
    Publication date: April 13, 2006
    Applicant: LIQUM PAPER OY
    Inventor: Sakari Laitinen-Vellonen