Patents by Inventor Pasi Aalto

Pasi Aalto 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 increasing the size of small particles
    Patent number: 7975564
    Abstract: A method and apparatus for increasing the size of small particles for a condensation particle counter, in which method a particle containing aerosol flow is divided into a sample flow and a sheath flow. The sheath flow is filtered, saturated with vapor and formed to a vortex flow in a saturator which vortex-flow continues in a condenser. The sample flow is introduced to the center of the vortex flow of the saturated sheath flow in the condenser for causing the vapor in the saturated sheath flow to condense on the particles in the sample flow thus increasing the size of the particles.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: July 12, 2011
    Assignee: Dekati Oy
    Inventors: Vidmantas Ulevicius, Markku Kulmala, Genrik Mordas, Vytautas Matulevicius, Vytautas Grigoraitis, Kaarle Hämeri, Pasi Aalto
  • METHOD AND APPARATUS FOR INCREASING THE SIZE OF SMALL PARTICLES
    Publication number: 20090031828
    Abstract: A method and apparatus for increasing the size of small particles for a condensation particle counter, in which method a particle containing aerosol flow is divided into a sample flow and a sheath flow. The sheath flow is filtered, saturated with vapor and formed to a vortex flow in a saturator which vortex-flow continues in a condenser. The sample flow is introduced to the centre of the vortex flow of the saturated sheath flow in the condenser for causing the vapor in the saturated sheath flow to condense on the particles in the sample flow thus increasing the size of the particles.
    Type: Application
    Filed: December 22, 2004
    Publication date: February 5, 2009
    Applicant: Dekati Oy
    Inventors: Vidmantas Ulevicius, Markku Kulmala, Genrik Mordas, Vytautas Matulevicius, Vytautas Grigoraitis, Kaarle Hameri, Pasi Aalto
  • Sampling device for introduction of samples into analysis system
    Patent number: 7485854
    Abstract: A sampling device, for example a sampling valve, is disclosed for introduction of samples into an analysis system. The sampling device comprises a turning element provided with a sampling area. The sampling area is configured to retain samples to be analysed. The turning element is arranged for movement between a first position where the sampling area is exposed to material to be sampled for collection of samples and a second position where samples are released for use by the analysis system.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: February 3, 2009
    Assignees: University of Helsinki, Department of Chemistry, Laboratory of Analytical Chemistry, University of Helsinki, Department of Physical Science, division of Atmospheric Sciences, Finnish Meteorological Instutute
    Inventors: Kari Hartonen, Kari Kuuspalo, Heikki Lihavainen, Pasi Aalto, Markku Rasilainen, Marja-Liisa Riekkola, Markku Kulmala, Yrjo Viisanën
  • Sampling device for introduction of samples into analysis system
    Publication number: 20070275474
    Abstract: A sampling device, for example a sampling valve, is disclosed for introduction of samples into an analysis system. The sampling device comprises a turning element provided with a sampling area. The sampling area is configured to retain samples to be analysed. The turning element is arranged for movement between a first position where the sampling area is exposed to material to be sampled for collection of samples and a second position where samples are released for use by the analysis system.
    Type: Application
    Filed: May 23, 2006
    Publication date: November 29, 2007
    Inventors: Kari Hartonen, Kari Kuuspalo, Heikki Lihavainen, Pasi Aalto, Markku Rasilainen, Marja-Liisa Riekkola, Markku Kulmala, Yrjo Viisanen