Patents by Inventor Robert K. Hitch

Robert K. Hitch 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).

  • Automated means for high volume, discrete depth plankton collecting
    Patent number: 4137772
    Abstract: A plankton collector comprised of an open cylinder having a netting and motor with an attached propeller. The motorized propeller and netting are attached within the cylinder so that the propeller pulls water through the netting thereby concentrating the planktonic organisms. Flowmeters can easily be attached for quanitative measurement of the water flow. Two species of this invention are set forth. One species is designed to be tethered by its electrical cord in flowing water. The other species, has a portable power supply and is designed to be used by a submerged diver.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: February 6, 1979
    Inventor: Robert K. Hitch