Patents by Inventor Dirk M. Kerkhoff

Dirk M. Kerkhoff 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: 8708603
    Abstract: An aeration and drainage system includes an aeration & drain pipe which contains slots on its upper surface, a stand which holds said aeration & drain pipe above a bottom surface, an air and liquid transfer element attached to the aeration & drain pipe and positioned over said slots. Additionally the air and liquid transfer element extends upward from the slots, and the air and liquid transfer element contains openings on its top to allow fluids to flow into the air and liquid transfer element and through the slots in the aeration & drain pipe.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 29, 2014
    Assignee: Buildworks Systems, Inc.
    Inventors: Dirk M. Kerkhoff, J. Cornelis Kerkhoff
  • Publication number: 20110204529
    Abstract: An aeration and drainage system includes an aeration & drain pipe which contains slots on its upper surface, a stand which holds said aeration & drain pipe above a bottom surface, an air and liquid transfer element attached to the aeration & drain pipe and positioned over said slots. Additionally the air and liquid transfer element extends upward from the slots, and the air and liquid transfer element contains openings on its top to allow fluids to flow into the air and liquid transfer element and through the slots in the aeration & drain pipe.
    Type: Application
    Filed: February 22, 2011
    Publication date: August 25, 2011
    Applicant: BUILDWORKS SYSTEMS INC.
    Inventors: Dirk M. Kerkhoff, J. Cornelis Kerkhoff
  • Patent number: 6746179
    Abstract: A system component, method of using, manufacturing and installing such, which facilities both the aerating of compost and the draining of liquid formed therein, utilizing a Especially formed component having an extruded longitudinal projection with a surface in which holes may be formed therein after embedding, in a concrete floor, with the surface and holes substantially level in the concrete floor so that fluids may readily either enter or exit through the holes in the component. When connected to an appropriate collection of peripheral supporting equipment, accordingly a set of such components can be utilized to create an efficient composting facility which permits fluids, typically air, to be easily forced into or out from compost residing thereon and excess effluent, typically liquid, which may be contained within the composting material to easily drain therefrom.
    Type: Grant
    Filed: February 26, 2002
    Date of Patent: June 8, 2004
    Inventor: Dirk M. Kerkhoff