Patents by Inventor Hendricus Johannes Grootenboer

Hendricus Johannes Grootenboer 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).

  • Device for moving two objects relative to each other
    Patent number: 6200317
    Abstract: A device for moving a first object relative to a second object, which device comprises a first part, which can be fixed to the first object, and a second part, which can be fixed to the second object. The first part comprises an elongated portion, along which the second part can move, which second part is provided with a clamping member, which is capable of clampingly engaging the elongated portion. The clamping member comprises shape memory metal, which gives the clamping member a clamping shape or a releasing (non-clamping) shape, depending on the temperature of the shape memory metal. The device may be suitable for being implanted into a human or animal body, whereby the first object is a first bone portion and the second object is a second bone portion, which bone portions are to be moved relative to each other.
    Type: Grant
    Filed: September 23, 1999
    Date of Patent: March 13, 2001
    Assignee: Universiteit Twente and Technologiestichting STW
    Inventors: Arthur Martinus Michael Aalsma, Hendricus Johannes Grootenboer, Edsko Evert Geert Hekman, Jouwert Wilhelm Jacobus Lucas Stapert