Patents by Inventor Theodorus J. J. Groothuizen

Theodorus J. J. Groothuizen 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).

  • Apparatus for the detection of a specifically reacting substance
    Patent number: 5611995
    Abstract: An apparatus detects a specifically reacting substance in a test liquid. The apparatus has a housing and a holding device thereon for holding a test strip. The test strip has a material that transports a test liquid essentially by capillary forces and has an analytical system which indicates the presence or absence of the substance to be detected. The holding device can be attached to the housing with an opening therebetween for allowing evaporation of test liquid. The housing can be elongated for accepting a sample collector therein. A contact mechanism can also be disposed for promoting contact of liquid sample from the sample collector when inserted in the housing, to the test strip held by the holding device.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: March 18, 1997
    Assignee: Akzo Nobel N.V.
    Inventors: Juan P. de Zoeten, Petrus F. H. M. Verheijden, Theodorus J. J. Groothuizen, Jozef H. M. Raijmakers
  • Pregnancy testing stick
    Patent number: D348522
    Type: Grant
    Filed: October 10, 1991
    Date of Patent: July 5, 1994
    Assignee: Chefaro International B.V.
    Inventor: Theodorus J. J. Groothuizen
  • Pregnancy testing stick
    Patent number: D348735
    Type: Grant
    Filed: March 31, 1992
    Date of Patent: July 12, 1994
    Assignee: Organon Teknika B. V.
    Inventor: Theodorus J. J. Groothuizen
  • Combined pregnancy testing stick and end cap
    Patent number: D358218
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: May 9, 1995
    Assignee: Chefaro International B.V.
    Inventors: Theodorus J. J. Groothuizen, Jozef H. M. Raijmakers
  • Pregnancy testing stick
    Patent number: D365998
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: January 9, 1996
    Assignee: Chefaro International B.V.
    Inventors: Theodorus J. J. Groothuizen, Jozef H. M. Raijmakers, Irene P. J. van Peer
  • Pregnancy testing stick
    Patent number: D367236
    Type: Grant
    Filed: September 12, 1994
    Date of Patent: February 20, 1996
    Assignee: Chefaro International B.V.
    Inventors: Theodorus J. J. Groothuizen, Jozef H. M. Raijmakers, Irene P. J. van Peer