Patents by Inventor Per Wallin

Per Wallin 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).

  • Publication number: 20190309471
    Abstract: The invention relates to a pulp refining system for mechanically refining of lignocellulosic material, comprising a defibrator, a defibrator housing, in which the defibratoris arranged, a blow valve having an inlet and an outlet and being adapted for regulating a flow of pulp therethrough, and a discharge pipe having an inlet, which is connected to the outlet (12) of the blow valve, wherein a mounting pipe having an inlet, which is connected to the defibrator housing, is arranged between the defibrator housing and the blow valve, said mounting pipe having a length of at least about 0.2 meter.
    Type: Application
    Filed: June 1, 2017
    Publication date: October 10, 2019
    Applicant: VALMET AB
    Inventors: Per WALLIN, Örjan AHLGREN, Per NYBERG, Per ERIKSSON, Mattias GRANNAS
  • Patent number: 9598818
    Abstract: Apparatus for washing and/or dewatering cellulose pulp is disclosed including a movable permeable surface in a pulp transportation chamber having a chamber gap above the movable permeable surface, a pulp distributor for distributing pulp onto the movable permeable surface, a throttle having a throttle gap width and an adjustable throttle adjuster to remotely adjust the throttle gap width so that a volume of pulp flow into the pulp distributor is equal to or greater than the volume of pulp flow out of the distributor during operation.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: March 21, 2017
    Assignee: Valmet AB
    Inventors: Tobias Lööf, Patrik Pettersson, Jonas Orgård, Hans Lövgren, Per Wallin, Peter Nykvist, Jonas Magnusson
  • Publication number: 20150361617
    Abstract: Apparatus for washing and/or dewatering cellulose pulp is disclosed including a movable permeable surface in a pulp transportation chamber having a chamber gap above the movable permeable surface, a pulp distributor for distributing pulp onto the movable permeable surface, a throttle having a throttle gap width and an adjustable throttle adjuster to remotely adjust the throttle gap width so that a volume of pulp flow into the pulp distributor is equal to or greater than the volume of pulp flow out of the distributor during operation.
    Type: Application
    Filed: December 19, 2013
    Publication date: December 17, 2015
    Applicant: Valmet AB
    Inventors: Tobias Lööf, Patrik Pettersson, Jonas Orgård, Hans Lövgren, Per Wallin, Peter Nykvist, Jonas Magnusson
  • Publication number: 20120237496
    Abstract: The present invention relates to polypeptides comprising protease variants of wild type human neprilysin having an altered specificity and/or activity. In particular the present invention relates to polypeptides comprising protease variants derived from human neprilysin having an increased specificity and/or activity against certain substrates, in particular against amyloid beta.
    Type: Application
    Filed: June 21, 2010
    Publication date: September 20, 2012
    Inventors: Joerg Birkenfeld, Andrea Eicker, Per-Ola Freskgard, Claudia Gotzberger-Schad, Joanna Grudzinska, Ulrich Haupts, Josi Innig, Christoph Mahlert, Andreas Scheidig, Michael Strerath, Jan Tebbe, Johan Per-Wallin, Nina Wobst, Carl Innes Webster, Lutz Jermutus
  • Patent number: 5165825
    Abstract: Rock bolting device comprising a swingable bolting unit (2) which carries a conduit (4) for transport of hardenable mass to a drill hole (3). The conduit is surrounded by a tube (5) in which a thickened part (6) of the conduit is movable to-and-fro under sealing cooperation with the tube. Through this the conduit (4) can be fed towards or away from the mouth (7) of the drill hole (3).
    Type: Grant
    Filed: November 12, 1991
    Date of Patent: November 24, 1992
    Assignee: Atlas Copco Construction and Mining Technique AB
    Inventor: Per Wallin