Patents by Inventor Donald R. Robson

Donald R. Robson 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).

  • Submersible cage system for culturing aquatic animals
    Patent number: 5251571
    Abstract: A submersible cage system for cultivating aquatic animals comprises a rigid frame defining a geodesic enclosure, a net supported by the rigid frame to define a water permeable enclosure for the aquatic animals, the rigid frame being rotatable about a horizontal axis, flotation chambers disposed at opposite sides of the rigid frame, the flotation chambers being alternately fillable with a gas or a liquid to increase or decrease, respectively, the cage system's buoyancy, and a mooring for anchoring the frame in a fixed position in a marine environment.
    Type: Grant
    Filed: September 5, 1991
    Date of Patent: October 12, 1993
    Assignee: Innovation & Development Partners Inc./IDP Inc.
    Inventors: Michael D. Willinsky, Donald R. Robson