Patents by Inventor Annele Virtanen

Annele Virtanen 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 measuring density properties of a particle distribution
    Patent number: 7131343
    Abstract: A method and a device for measuring density properies of a particle distribution, in which method a first parameter relating to the particle distribution is measured at a first measuring point (302), at least part of the flow that passed through the first measuring point is guided to the second measuring point (304), a second parameter relating to the particle distribution is measured at a second measuring point (305), and said first and second parameters relating to the particle distribution are used to determine at least one density property of the particle distribution of the original flow (306).
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: November 7, 2006
    Assignee: Dekati, Oy
    Inventors: Jorma Keskinen, Mikko Moisio, Marko Marjamäki, Annele Virtanen, Jyrki Ristimäki
  • Method for measuring properties of a particle distribution
    Patent number: 7066037
    Abstract: A method and a device for measuring properties of a particle distribution, in which a parameter relating to the mobility of the particles is measured at one measuring point (302) and a parameter relating to the aerodynamic size of the particles is measured at a second measuring point (305). By means of the measured parameters, at least one property of the particle distribution of the original flow is determined (306).
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: June 27, 2006
    Assignee: Dekati Oy
    Inventors: Jorma Keskinen, Marko Marjamäki, Mikko Moisio, Jyrki Ristimäki, Annele Virtanen
  • Method of measuring density properties of a particle distribution
    Publication number: 20050119836
    Abstract: A method and a device for measuring density properies of a particle distribution, in which method a first parameter relating to the particle distribution is measured at a first measuring point (302), at least part of the flow that passed through the first measuring point is guided to the second measuring point (304), a second parameter relating to the particle distribution is measured at a second measuring point (305), and said first and second parameters relating to the particle distribution are used to determine at least one density property of the particle distribution of the original flow (306).
    Type: Application
    Filed: August 20, 2002
    Publication date: June 2, 2005
    Inventors: Jorma Keskinen, Mikko Moisio, Marko Marjamaki, Annele Virtanen, Jyrki Ristimaki
  • Method for measuring properties of a particle distribution
    Publication number: 20040244508
    Abstract: A method and a device for measuring properties of a particle distribution, in which a parameter relating to the mobility of the particles is measured at one measuring point (302) and a parameter relating to the aerodynamic size of the particles is measured at a second measuring point (305). By means of the measured parameters, at least one property of the particle distribution of the original flow is determined (306).
    Type: Application
    Filed: July 22, 2004
    Publication date: December 9, 2004
    Inventors: Jorma Keskinen, Marko Marjamaki, Mikko Moisio, Jyrki Ristimaki, Annele Virtanen
  • Method for minimizing coulombic losses in electrical impactors and an electrical impactor
    Patent number: 6401553
    Abstract: The subject of the invention is a method for minimizing Coulombic losses in impactors and an impactor, in which Coulombic losses have been minimized. The method according to the invention is based on restricting the force effect of the charges accumulated in impactor's insulators on the charged particles. This restriction of the force effect can be realized, for example, by placing an electrically conductive surface between the insulator and the flow, or by forming an insulator so that the force effect is minimized.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: June 11, 2002
    Assignee: Dekati Oy
    Inventors: Jorma Keskinen, Annele Virtanen