Patents by Inventor Lauri Markus Sivonen

Lauri Markus Sivonen 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).

  • Test strip, its production and use
    Patent number: 5965458
    Abstract: A test strip for a rapid immunoassay containing specific immunochemical reagent zones (7, 8, 9) is described. The test strip (10) has a backing sheet (1) and attached thereto a receiving end pad (3) and at a distance therefrom a finishing end pad (5). A test membrane (2) is provided between said pads (3, 5). Said membrane (2) is positioned in parallel relationship to said backing (1) at a distance therefrom so that said backing (1) and said membrane (2) limit between themselves an air gap (4) which is open at its edges. Said gap (4) functions as a sheltered reaction chamber for the immunolgical reaction taking place as a liquid is made to flow through said membrane (2). The test strip is simple to manufacture by lamination and easy to use and it is suitable for both diagnostic and environmental immunoassays.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: October 12, 1999
    Assignee: Oy Medix Biochemica A.B.
    Inventors: Ilkka Sakari Kouvonen, Eivor Helena Svens, Sari Hannele Tikanoja, Pekka Antero Turunen, Lauri Markus Sivonen
  • Test strip, its production and use
    Patent number: 5712170
    Abstract: A test strip for a rapid immunoassay containing specific immunochemical reagent zones (7, 8, 9) is described. The test strip (10) has a backing sheet (1) and attached thereto a receiving end pad (3) and at a distance therefrom a finishing end pad (5). A test membrane (2) is provided between said pads (3, 5). Said membrane (2) is positioned in parallel relationship to said backing (1) at a distance therefrom so that said backing (1) and said membrane (2) limit between themselves an air gap (4) which is open at its edges. Said gap (4) functions as a sheltered reaction chamber for the immunolgical reaction taking place as a liquid is made to flow through said membrane (2). The test strip is simple to manufacture by lamination and easy to use and it is suitable for both diagnostic and environmental immunoassays.
    Type: Grant
    Filed: November 14, 1994
    Date of Patent: January 27, 1998
    Assignee: Oy Medix Biochemica AB
    Inventors: Ilkka Sakari Kouvonen, Eivor Helena Svens, Sari Hannele Tikanoja, Pekka Antero Turunen, Lauri Markus Sivonen