Patents by Inventor Leif PIIPPOLA

Leif PIIPPOLA 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 of and an arrangement for adding at least one additional stock component to an approach flow system of a fiber web machine
    Patent number: 11459700
    Abstract: A method of and an arrangement for adding at least one additional stock component to an approach flow system (30) of a fiber web machine by mixing the at least one additional stock component to a fibrous stock such that the stock flow is equalized (50) and the at least one additional stock component is introduced to the stock flow by injection mixing (80).
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: October 4, 2022
    Assignees: WETEND TECHNOLOGIES OY, VALMET TECHNOLOGIES OY
    Inventors: Antti Ketolainen, Jouni Matula, Leif Piippola
  • METHOD OF AND AN ARRANGEMENT FOR ADDING AT LEAST ONE ADDITIONAL STOCK COMPONENT TO AN APPROACH FLOW SYSTEM OF A FIBER WEB MACHINE
    Publication number: 20210189650
    Abstract: A method of and an arrangement for adding at least one additional stock component to an approach flow system (30) of a fiber web machine by mixing the at least one additional stock component to a fibrous stock such that the stock flow is equalized (50) and the at least one additional stock component is introduced to the stock flow by injection mixing (80).
    Type: Application
    Filed: December 18, 2020
    Publication date: June 24, 2021
    Inventors: Antti KETOLAINEN, Jouni MATULA, Leif PIIPPOLA