Patents by Inventor Thomas J. Malterer

Thomas J. Malterer 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: 6455149
    Abstract: Water swellable pellets, and a method of making, including peat moss, a pH adjusting agent, a wetting agent, and optionally a processing additive, preferably with a bulk density of about 300 kg/m3 to about 600 kg/m3.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: September 24, 2002
    Assignee: Regents of the University of Minnesota
    Inventors: Timothy S. Hagen, Thomas J. Malterer
  • Patent number: 4191263
    Abstract: Sample gathering apparatus for drivably moving a core sampling assembly into and out of subterranean zones for gathering core samples therewithin, with the apparatus including an elongated frame means which is adapted for adjustable pivotal mounting upon a supporting vehicle. Drive means are provided for delivering power to the core sampling assembly, and coupling means are further provided for releasably securing the drive means to the core sampling assembly. The core sampling assembly is arranged to be driven vertically into the subterranean zones to be sampled, and the coupling means which releasably secures the drive means to the core sampling assembly permits pivotal motion of the core sampling assembly about a generally horizontal axis so as to permit pivotal lifting of the core sampling assembly from the ground surface for easy removal of the sample retained therewithin.
    Type: Grant
    Filed: July 26, 1978
    Date of Patent: March 4, 1980
    Assignee: State of Minnesota as represented by the Commissioner of Natural Resources
    Inventor: Thomas J. Malterer