Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7468678 | Downhole telemetry system for wired tubing A communications system employing discrete multi-tone (“DMT”) modulated signals on a communications channel formed by inductively-coupled pipe. In one embodiment, the communications system includes a string of wired pipe joints that couple a transmitter to a rec... | 12/23/2008 |
| 7443312 | Downhole telemetry system having discrete multi-tone modulation with QAM fallback Improved communication systems and methods are disclosed. In one embodiment, a downhole communications system comprises a downhole transceiver and a surface transceiver. The surface transceiver receives a discrete multi-tone (DMT) modulated uplink signal from the do... | 10/28/2008 |
| 7372217 | Device for driving a light source module A driving device for driving a light source module (22) includes an inverter circuit (21), a signal sensing circuit (23), a microcontroller (24), and a control circuit (25). The inverter circuit converts a received power signal to ... | 05/13/2008 |
| 7348894 | Method and apparatus for using a data telemetry system over multi-conductor wirelines A data telemetry system for multi-conductor wirelines to enhance transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a first terminal of a data re... | 03/25/2008 |
| 7343261 | Underwater sensor transmitter probe An electronic apparatus for measuring water speed and water temperature then periodically transmitting said data during controlled depth fishing wherein an underwater probe is secured to and insulated conductive downrigger cable and gathers and relays data though th... | 03/11/2008 |
| 7268696 | Directional signal and noise sensors for borehole electromagnetic telemetry system An electromagnetic borehole telemetry system providing improved signal to noise ratio. Adaptive filters use noise channels as references to remove noise from the signal channel. Directional detectors provide a signal channel with reduced noise content and improved n... | 09/11/2007 |
| 7250857 | Multiplexer method and system for intrinsically safe applications and a multiplexer switch for use therein A multiplexing system is provided for a plurality of sensors disposed in a tank containing a potentially explosive environment and excited from a common excitation circuit outside of the tank through a corresponding plurality of signal lines that penetrate the tank.... | 07/31/2007 |
| 7187298 | Methods and systems for transmitting and receiving a discrete multi-tone modulated signal in a fluid Methods and systems for transmitting and receiving a discrete multi-tone (DMT) modulated signal in a fluid. Some illustrative embodiments may be a method comprising transforming an input data series into an information-carrying signal (the information-carrying signa... | 03/06/2007 |
| 7180825 | Downhole telemetry system for wired tubing A communications system employing discrete multi-tone (“DMT”) modulated signals on a communications channel formed by inductively-coupled pipe. In one embodiment, the communications system includes a string of wired pipe joints that couple a transmitter to a rec... | 02/20/2007 |
| 7158446 | Directional acoustic telemetry receiver Acoustic telemetry devices and methods that provide directional detection. In one embodiment, a disclosed acoustic telemetry device comprises at least two acoustic sensors and an electronics module. A first of the acoustic sensors detects a communication signal that... | 01/02/2007 |
| 7158048 | Identically programmed intelligent electrodes for use in geoelectrical surveys Apparatus for conducting geophysical surveys comprising a multiplicity of intelligent electrodes provided on a multi-conductor cable, for receiving a command signal in response to which predetermined electrodes are connected to selected conductors in the cable. Each... | 01/02/2007 |
| 7106210 | Method and apparatus for mud pulse telemetry A method and related apparatus for telemetry between downhole devices and surface devices. In particular, the methods and related apparatus may send a first datum of a first parameter in an uncompressed form, and send a second datum of the first parameter in compres... | 09/12/2006 |
| 7107188 | Digital pressure derivative method and program storage device In a Digital Pressure Derivative Technique (DPDT) which uses convolution, an input signal including noise is convolved with a wavelet to produce an output signal which is a derivative of the input signal and which is substantially devoid of the noise. The DPDT can b... | 09/12/2006 |
| 7096092 | Methods and apparatus for remote real time oil field management A method of managing oil fields include installing oil field sensors, coupling them to a local CPU having memory, programming the CPU for data collection and data analysis, and coupling local oil field CPUs to a web server. Human experts are granted access to oil fi... | 08/22/2006 |
| 7026952 | Downhole telemetry system using discrete multi-tone modulation having repeated symbols A downhole telemetry system and method using discrete multi-tone modulation having repeated symbols. The system includes a surface receiver, a cable, and a downhole transmitter coupled to the surface receiver via the cable. The transmitter communicates a time-domain... | 04/11/2006 |
| 7027967 | Method and system for indicating anisotropic resistivity in an earth formation A system and methods for indicating formation resistivity anisotropy and evaluating the vertical resistivity component by combining array induction measurements and array laterolog measurements. Formation measurements are obtained with an induction tool and a latero... | 04/11/2006 |
| 7026951 | Data telemetry system for multi-conductor wirelines An improved data telemetry system for multi-conductor wirelines to achieve satisfactory transmission of analog and digital signals with frequency content up to 100 kHz by assigning at least two conductors to a first terminal of a data transmittal means and to a firs... | 04/11/2006 |
| 7000693 | Control of hydrocarbon wells An apparatus controls the operation of a hydrocarbon production well. The apparatus includes a supply means for providing an electric power supply. The apparatus also includes a plurality of electrically operated actuating devices. The actuating devices can be a plu... | 02/21/2006 |
| 6999517 | Method and apparatus for transmission of data on multiple propagation modes with far-end cross-talk cancellation A digital telemetry system having improved data rate and robustness. The telemetry system has a data transmission cable having a first end and a second end, and is capable of transmitting data between the first and second end on at least two propagation modes. A dat... | 02/14/2006 |
| 6938458 | Acoustic doppler downhole fluid flow measurement An apparatus and system are disclosed for in situ measurement of downhole fluid flow using Doppler techniques. First, a baseline speed of sound is established as close to the desired measurement point as possible. This speed of sound measurement is then used in Dopp... | 09/06/2005 |
| 6937159 | Downhole telemetry and control system using orthogonal frequency division multiplexing A power transmission and data communications system for use in a gas or oil well borehole is disclosed. The borehole includes a casing and a piping structure therein and at least one downhole equipment module located therein. The system provides for a power signal t... | 08/30/2005 |
| 6920085 | Downlink telemetry system A downlink telemetry system providing improved apparatus and methods for communicating instructions via pressure pulses from surface equipment to a downhole assembly. The apparatus comprises a surface transmitter for generating pressure pulses, a control system, and... | 07/19/2005 |
| 6917304 | Wireless mutliplex data transmission system A method and apparatus for wireless transmission of data through a communications channel between at least two local data sensors (for example automotive diagnostic data sensors or NVH sensors), which may include a primary data-processing function, and data-processi... | 07/12/2005 |
| 6819260 | Synchronous CDMA telemetry system for use in a wellbore A synchronous CDMA telemetry system is provided for use in a wellbore. In one described embodiment, each data bit of digital outputs of multiple downhole data sources is multiplied by an orthogonal code unique to each data source. The resulting encoded outputs are m... | 11/16/2004 |
| 6728165 | Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors A system for sensing subterranean acoustic waves emitted from an acoustic source includes a plurality of laser sources, a plurality of subterranean optical sensors, at least one optical detector, and electronics. The laser sources each emit light at a different freq... | 04/27/2004 |
| 6677861 | Monitoring system The present invention provides a tool assembly for use in field applications to monitor at least one condition in a well or other hole. The tool assembly may include a computing unit for directing operation of the tool assembly and may be sized to be oper... | 01/13/2004 |
| 6252518 | Communications systems in a well A system for use with a well includes a surface device, a communications link coupled to the surface device and extending into the well, and a plurality of downhole devices coupled to different points on the communications link in the well. The surface de... | 06/26/2001 |
| 5995020 | Downhole power and communication system An apparatus for transmitting electricity between downhole well tools and the well surface. The apparatus incorporates a surface controller in combination with a conductor and a downhole receiver module. A choke prevents electricity from the controller fr... | 11/30/1999 |
| 5969638 | Multiple transducer MWD surface signal processing A system and method for signal processing are disclosed. One problem in measurement-while-drilling systems including a downhole acoustic transmitter is the presence of uphole generated noise and reflected signals. By proper spacing and timing of multiple ... | 10/19/1999 |
| 5856790 | Remote control for a plug-dropping head An apparatus and method of dropping a pumpdown plug or ball is revealed. The assembly can be integrally formed with a plug-dropping head or can be an auxiliary feature that is mounted to a plug-dropping head. The release mechanism is actuated by remote co... | 01/05/1999 |
| 5604724 | Maximum likelihood estimation using reference and spontaneous output peaks of partial response equalizer In a signal processor for processing a multilevel signal, a partial response equalizer is provided having a first predetermined number of reference amplitudes. The equalizer receives the multilevel signal and detects a significant instant of amplitude tra... | 02/18/1997 |
| 5387907 | High data rate wireline telemetry system In a well logging tool forming a data stream for telemetry to the surface, an encoding system is located downhole cooperative with surface located decoding equipment. The encoder converts serial data into NRZ symbols, then duobinary code of seven levels a... | 02/07/1995 |
| 5253219 | High count seismic data collection and transmission through analog time multiplexing A data collection and transmission system for gathering high count vertical seismic data is disclosed using a sequence of vertically aligned seismic receivers, the analog outputs from which are sequentially analog sampled and time multiplexed onto a commo... | 10/12/1993 |
| 5243337 | Process and device for optimizing signal transmission rates on multifunctional well cables A process for optimizing the transmission rates of digitized signals on transmission lines in multifunction cables, such as logging cables linking well tools to surface installations. The process includes digitising of the data to be transmitted and codin... | 09/07/1993 |
| 5227783 | Telemetry apparatus and method with digital to analog converter internally integrated within C.P.U. The disclosure relates to a microprocessor based telemetry apparatus and method utilizing a commercially available IBM PC-AT or compatible CPU. Three hardware cards fit in existing slots within the computer chassis. Software is provided to accomplish, in ... | 07/13/1993 |
| 5067114 | Correlation for combinational coded telemetry A unipolar, RZ, constant width pulse telemetry is achieved in the combinatorial set, or any desired subset of pulse sequences thereof. Each input datum W is in one-to-one correspondence with a particular pulse sequence and the correspondence of datum with... | 11/19/1991 |
| 5034929 | Means for varying MWD tool operating modes from the surface A method and apparatus for establishing a remote communications link from the rig floor to the downhole MWD system is presented. In accordance with the present invention, the state of a physical condition downhole is changed in a predetermined timed seque... | 07/23/1991 |
| 5010333 | Advanced digital telemetry system for monocable transmission featuring multilevel correlative coding and adaptive transversal filter equalizer The present disclosure is directed to an improved telemetry system and data recovery telemetry receiver apparatus for installation with a logging cable supported sonde. In the sonde, a data stream is modulated onto a carrier after conversion by an encoder... | 04/23/1991 |
| 5008664 | Apparatus for inductively coupling signals between a downhole sensor and the surface An apparatus employing a set of inductive coils to transmit AC data and power signals between a downhole apparatus (which may include a sensor and a safety valve) and apparatus at the surface of the earth. In a preferred embodiment, the invention inductiv... | 04/16/1991 |
| 4968978 | Long range multiple point wireless control and monitoring system A method for remotely monitoring conditions such as carbon monoxide for methane gas concentration, longwall roof support pressure, machine parameters or uncut coal, trona or potash layer thickness in a natural resource mining system such as a longwall or ... | 11/06/1990 |
