Patents by Inventor David Middlebrook

David Middlebrook 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).

  • Publication number: 20050166446
    Abstract: An apparatus for the delivery of toxicant to vermin includes an expandable conduit having an entry and exit for vermin, and which is expandable upon installation into an area determined to be suitable for vermin control. A toxicant is placeable in the expanded conduit such that vermin will contact the toxicant when passing through the conduit. In another apparatus, a toxicant is disposed within a conduit having an entry and exit for vermin. The toxicant is secured within the conduit to prevent spillage of the toxicant upon installation of the apparatus. The toxicant may be preloaded in a container. Methods for using the apparatuses are also described.
    Type: Application
    Filed: November 12, 2004
    Publication date: August 4, 2005
    Inventors: John Middlebrook, Beverly Middlebrook, Christopher Middlebrook, David Middlebrook, Heide Middlebrook
  • Patent number: 5930809
    Abstract: A system and method which enables individuals to manipulate text retrieved by a computer in such a manner that the computer user can rapidly and accurately obtain information about the contents of a retrieved body of text without reading the text. If a computer retrieves text that is too large to display on a single computer screen, the present invention creates a map box on the computer screen. The map box is displayed along with a portion of the retrieved text. Within the map box is displayed a representation of the entire body of text. Using a screen icon, a user can point to any place in the representation of the body of text. The portion of the body of text pointed to then becomes displayed on the computer screen. Furthermore, the representation of the text in the map box can be mapped in different ways to help inform the computer user as to the contents of the body of text prior to that text being read.
    Type: Grant
    Filed: September 22, 1997
    Date of Patent: July 27, 1999
    Inventor: R. David Middlebrook
  • Patent number: 5770972
    Abstract: A coupling circuit composed of an input terminal for receiving an input signal from a source and first and second output terminals for supplying an output signal to a load; a signal processing device connected between the input terminal and the first output terminal for deriving an output signal from the input signal and for supplying the output signal to a load connected between the output terminals; a power supply; connecting lines each having a finite impedance and connected for supplying operating power from the power supply to the signal processing device, a distortion eliminating circuit connected between the power supply and the second output terminal for directing load current to the signal processing device so as to bypass the load current from the line impedances, the distortion eliminating device including at least one active circuit element and having an electric characteristic corresponding substantially to a capacitor with infinite capacitance.
    Type: Grant
    Filed: February 14, 1997
    Date of Patent: June 23, 1998
    Assignee: Zero Impedance Systems, Inc.
    Inventors: George H. Freuler, Edward J. Collier, deceased, David Mazi, R. David Middlebrook
  • Patent number: 5713740
    Abstract: A system and method which enables individuals to rapidly and accurately obtain information about the contents of a written text without having to read the words of the text. Written text, which is comprised of graphic markings that represent linguistic sound, forms a graphic image. This graphic image can be mapped in various ways to illustrate and provide insight about the structure and content of the text with regard to one or more selected features. Individuals can perceive the graphic information contained in the text using parafoveal and peripheral vision, thereby enabling those individuals to process the graphic information using visual/spacial cognitive abilities. The present invention system and method therefore enables a person to understand a large amount of information about the body of written text without reading the words comprising the body of written text.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: February 3, 1998
    Inventor: R. David Middlebrook
  • Patent number: 5604463
    Abstract: A coupling circuit composed of an input terminal for receiving an input signal from a source and first and second output terminals for supplying an output signal to a load; a signal processing device connected between the input terminal and the first output terminal for deriving an output signal from the input signal and for supplying the output signal to a load connected between the output terminals; a power supply; connecting lines each having a finite impedance and connected for supplying operating power from the power supply to the signal processing device, a distortion eliminating circuit connected between the power supply and the second output terminal for directing load current to the signal processing device so as to bypass the load current from the line impedances, the distortion eliminating device including at least one active circuit element and having an electric characteristic corresponding substantially to a capacitor with infinite capacitance.
    Type: Grant
    Filed: March 27, 1995
    Date of Patent: February 18, 1997
    Assignee: Zero Impedance Systems
    Inventors: George H. Freuler, Edward J. Collier, deceased, David Mazi, R. David Middlebrook
  • Patent number: 5556282
    Abstract: A method employing the art, science, and technology of cartography to decode and comprehend graphic language texts. Improved reading and writing proficiency and efficiency may be realized by mapping a graphic language textscape (c.f. landscape). A textscape may be mapped with regard to typography, graphic or phonetic attributes of selected graphic features, meaning or usage of selected graphic features, statistical analyses of the attributes, meaning, or usage of selected graphic features, or semantic, rhetorical, compositional, thematic, or conceptual configuration. Two or more textmaps may be compared by sequential display, juxtaposition, superimposition, or animation (rapid sequential display). Elements of two or more textmaps may be combined either selectively or wholesale to produce a new textmap. Textmapping may be practiced in any scale, in up to four dimensions. Textmapping may be practiced directly upon a text, as well as indirectly, off to the side or on a separate surface, for example.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: September 17, 1996
    Inventor: R. David Middlebrook