Patents by Inventor Johannes Henricus Maria de Kroon

Johannes Henricus Maria de Kroon 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).

  • Adjustable chair for medical and paramedical diagnosis and treatment, and adjustable ergonomic chair
    Patent number: 7428761
    Abstract: Adjustable chair for medical and paramedical diagnosis and treatment, comprising a pillar, a seat, a chair back, a support for the lower legs and if appropriate a head rest, the height of the pillar being adjustable and the remainder of the parts mentioned being adjustable with respect to one another. The chair back, the seat and the support for the lower legs are adjustable into a fully extended (bed) position. Also an ergonomic chair, particularly an automobile chair.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: September 30, 2008
    Inventors: Paul Arthur Engels, Johannes Henricus Maria de Kroon, Gaston Lionel van Amerongen