Patents by Inventor David J. Nooyen

David J. Nooyen 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: 5921205
    Abstract: A sow farrowing station to reduce the mortality of piglets includes a slab, a surrounding crate to constrain the sow, the slab defining within a crate a floor transport region consisting of independent pressure sensitive members which travel over the region to transport piglets from beneath the sow, but when the sow itself steps onto one of the pressure sensitive transport members, that member stops its travel so that the sow does not have to continually "walk" yet, when the sow lies down all the transport members are arrested and the piglets can then move to nurse from the sow.
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: July 13, 1999
    Assignee: Nooyen Farrowing Station Ltd.
    Inventors: David J. Nooyen, Erick J. Nooyen