Patents by Inventor Johan Jarnefelt

Johan Jarnefelt 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 equipment for the measurement of properties of a liquid
    Patent number: 4452902
    Abstract: Method and apparatus for the measurement of properties of a liquid present in a vessel (2), for example for the measurement of the absorbance of a liquid, of the properties of an agglutination, precipitate (4) or any other reaction result placed on the bottom of a vessel, by means of radiation and of a detector (3) receiving radiation while the vessel moves along with a rotor revolving around the vertical axis (15) of a centrifuge. Thereby the beam of measurement (5) coming from the source of radiation (1) passes substantially horizontally and the intensity of the radiation passing through, or reflected from, the contents of the vessel is measured.
    Type: Grant
    Filed: November 19, 1981
    Date of Patent: June 5, 1984
    Assignee: Labsystems Oy
    Inventors: Osmo A. Suovaniemi, Pertti Ekholm, Johan Jarnefelt, Esko Kaukanen, Paul Partanen
  • Form piece for apparatuses used for immunoassays and enzyme reactions
    Patent number: 4147752
    Abstract: A form piece is disclosed which may be mounted in a test tube cuvette or similar vessel and is coated with an antibody, enzyme or other material to be used in laboratory tests. The form piece is preferably made in a ring-like configuration and includes projecting members which space the form piece from the sides of the vessel.
    Type: Grant
    Filed: January 11, 1978
    Date of Patent: April 3, 1979
    Assignee: Kommandiittihytio Finnpipette Osmo A. Souvaniemi
    Inventors: Osmo A. Suovaniemi, Pertti Ekholm, Jukka Suni, Johan Jarnefelt