Patents by Inventor Jan Lilja

Jan Lilja 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).

  • Patent number: 6638769
    Abstract: A method for hemoglobin determination is described which includes the steps of introducing a sample of undiluted whole blood by capillary action into a disposable microcuvette having at least one cavity for receiving the sample. The cavity includes a dry essentially non-hygroscopic hemolysing agent, which is dissolved by the blood, hemolyses the red blood cells and releases the haemoglobin contained in the blood cells. A first absorption measurement at a wavelength range 490-520 nm is then performed directly on the sample in the microcuvette, and a second absorption measurement is performed to compensate for background interference.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: October 28, 2003
    Assignee: Migrata UK Ltd.
    Inventors: Jan Lilja, Sven-Erik Nilsson, Johnny Svensson, Annika Eriksson
  • Publication number: 20020058342
    Abstract: The present invention concerns a method for hemoglobin determination which comprises the steps of introducing a sample of undiluted whole blood by capillary action into a disposable microcuvette having at least one cavity for receiving the sample. The cavity includes a dry essentially non-hygroscopic hemolysing agent, which is dissolved by the blood, hemolyses the red blood cells and releases the haemoglobin contained in the blood cells. A first absorption measurement at a wavelength range 490-520 nm is then performed directly on the sample in the microcuvette, and a second absorption measurement is performed to compensate for background interference.
    Type: Application
    Filed: October 10, 2001
    Publication date: May 16, 2002
    Inventors: Jan Lilja, Sven-Erik Nilsson, Johnny Svensson, Annika Eriksson
  • Patent number: 6096552
    Abstract: A method is provided for monitoring the cooking temperature of meat patties. More specifically, a method is provided for monitoring the cooking temperature of meat patties by determining the concentration of colored compounds, such as myoglobin, in meat juice.
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: August 1, 2000
    Assignee: Migrata U.K. Ltd.
    Inventors: Bertil Nilsson, Sven-Erik Nilsson, Anders Williamsson, Jan Lilja
  • Patent number: 5674457
    Abstract: The present invention is related to an integral capillary microcuvette comprising a body member and a cavity including a measuring zone within the body member. The cavity is defined by two opposite, substantially parallel inner surfaces of the body member and includes an outer peripheral edge comprising a sample inlet and an inner peripheral zone having a channel of higher capillary force than the measuring zone. The channel extends around the entire inner peripheral zone with ends of the channel communicating with the atmosphere at the exterior of the microcuvette.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: October 7, 1997
    Assignee: Hemocue AB
    Inventors: Anders Williamsson, Stefan Wahlqvist, Sven-Erik Nilsson, Jan Lilja, Lars Jansson, Bertil Nilsson
  • Patent number: 5472671
    Abstract: The present invention is a cuvette provided with at least two cavities. The first or inlet cavity takes up fluid by capillary action. The second cavity is a reception cavity which communicates with the first cavity through a first channel. The second cavity preferably is constructed and arranged to not exert a capillary action, although it could be constructed to exert a capillary action. The first channel which is in fluid communication with the first cavity and the second cavity exerts a non-capillary and non-spontaneous fluid transporting function that is operative only under an external influence, such as by application of a centrifugal force on the cuvette. The cuvette is well suited for a variety of analyses, particularly upon whole blood.
    Type: Grant
    Filed: February 14, 1994
    Date of Patent: December 5, 1995
    Inventors: Sven-Erik Nilsson, Jan Lilja
  • Patent number: 5286454
    Abstract: A cuvette for taking up a fluid and mixing the fluid with a reagent for analyzing the mixture consists of a body (10) of glass or polymeric material having a first cavity (12) in which the fluid can be taken up, preferably by capillary action, through an inlet (13), and at least one further cavity (21) exerting capillary force on fluid which is transported from the first cavity (12) into a reception cavity (17) by subjecting the cuvette to centrifugal force. The further cavity (21) preferably exerts capillary force through a wick (19) which does not extend as far as the bottom of the reception cavity (17), and a capillary channel (20). In those cases where more than one further cavity (21) is provided, each such cavity (21) communicates with a further reception cavity into which the fluid can be transported from the cavity (21) by the exertion of centrifugal force. The cuvette may also have cavities for receiving washing or diluting liquid, which are connected in series or in parallel with the cavity (12).
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: February 15, 1994
    Inventors: Sven-Erik Nilsson, Jan Lilja
  • Patent number: D337388
    Type: Grant
    Filed: March 14, 1991
    Date of Patent: July 13, 1993
    Assignee: Hemocue AB
    Inventors: Sven-Erik Nilsson, Jan Lilja