Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8170134 | Transmitter and a method for duplicating same The present invention is intended to realize a transmitter whose internal signal processing function can be duplicated without having to add any hardware components. The transmitter converts an input signal into an output signal using a plurality of calculation step... | 05/01/2012 |
| 8154550 | Waveform display device and waveform display method The invention aims to implement a waveform display device capable of visibly displaying a comparison waveform in an arbitrary range and a waveform display method. The waveform display device for executing waveform display of waveform data on a display section compri... | 04/10/2012 |
| 8151653 | Coriolis flowmeter A Coriolis flowmeter 10 vibrates a measurement tube through which a fluid subject to measurement flows, detects vibrations including Coriolis force developed in the fluid from the vibrations, and measures a mass flow rate of the fluid from a detection signal.... | 04/10/2012 |
| 8130636 | Communication control system A communication control system is provided that performs communications satisfying a request for industrial applications and a request for open protocol communications at the same time. To this end, in the invention, a high-priority communication section performing ... | 03/06/2012 |
| 8125638 | Spectroscope An improvement is added to a spectroscope for performing wavelength dispersion of measured light with a wavelength dispersion element and receiving the light at a light reception element. The spectroscope has a first compound lens made up of a plurality of lenses fo... | 02/28/2012 |
| 8115913 | Light pulse generator and optical time domain reflectometer using the same There is provided a light pulse generator. The light pulse generator includes: a laser diode; a voltage source that provides a bias voltage to the laser diode; a switching element that causes the laser diode to emit a light pulse by directly modulating the laser dio... | 02/14/2012 |
| 8087549 | Liquid supply apparatus and method of detecting fault thereof In a liquid supply apparatus, a liquid held in a liquid holding portion is pushed out to the exterior by pressurized gas. The apparatus includes a liquid pouring section for pouring a predetermined amount of liquid into an intermediate portion of the liquid holding ... | 01/03/2012 |
| 8086175 | Field device search system The field device search system is composed of a plurality of field devices having a wireless transmitting/receiving capability and an information terminal having a receiving capability to receive radio waves from a field device, wherein the information terminal incl... | 12/27/2011 |
| 8060769 | Duplexed field controller There is provided a duplexed field controller. The duplexed field controller includes: first and second control units between which a control authority is switchable; a first application clock that is updated based on a reference clock so as to define a timing of an... | 11/15/2011 |
| 8059967 | Optical pulse generator and optical pulse tester An optical pulse generator includes a light emitting element that emits an optical pulse, and a driver. The driver is configured to apply a pulse driving current to the light emitting element to allow the light emitting element to emit an optical pulse. The driver i... | 11/15/2011 |
| 8054850 | Communication control system A communication control system is provided that satisfies the needs of industrial applications in terms of real time properties, scalability and flexibility. For this purpose, the invention causes a communication station performing communications in accordance with ... | 11/08/2011 |
| 8047080 | Electromagnetic flowmeter and zero point measurement method thereof An electromagnetic flowmeter for giving a magnetic field to a measurement fluid, detecting an electric signal occurring in the measurement fluid according to the magnetic field, and computing a flow quantity value based on the electric signal includes a zero point m... | 11/01/2011 |
| 8032257 | Field equipment of two-wire A field equipment includes: a signal processing section; a first calculation control section for generating a first control signal which controls a start of a signal processing of the signal processing section; first and second insulating sections coupled to the fir... | 10/04/2011 |
| 8031727 | Wireless network system In a wireless network system for interconnecting a wireless network and another network different from the wireless network, the wireless network system includes: a plurality of wireless nodes for establishing the wireless network; a control device connected to the ... | 10/04/2011 |
| 8024053 | Safety instrumentation system and plant safety system An instruction converting unit converts the data form of an instruction of an operation received by a receiving unit to the data form of a safety instrumentation system from the data form of a plant control system. An operation carrying out unit receives the instruc... | 09/20/2011 |
| 8009683 | IP network system There is provided an IP network system. The IP network system includes: a plurality of relays making up a ring network; a source host for transmitting a packet and connected to the ring network; and a destination host which conducts a packet communication with the s... | 08/30/2011 |
| 8005514 | Field device and method for transferring the field device's signals The present invention provides a field device whereby the device's additional information can be transmitted wirelessly without the need for battery replacement or external wiring. The present invention also provides a field device whereby the firmware of a wireless... | 08/23/2011 |
| 8001847 | Coriolis mass flowmeter There is provided a Coriolis mass flowmeter. The flowmeter is configured to vibrate a pipe line through which a fluid flows and measure a mass flow rate of the fluid flowing through the pipe line, based on a phase difference between an upstream vibration signal and ... | 08/23/2011 |
| 7999661 | Signal relay device, communication network system and operation system A signal relay device, a communication network system and an operation system include: a standardized logic interface conversion unit for judging a control system type or a device type and converting a signal to a signal appropriate for a communication network; or a... | 08/16/2011 |
| 7991486 | Process control apparatus rejecting disturbance applied to feedback loop A process control apparatus for controlling a control target includes, but is not limited to, first and second control units. The first control unit is designed in a design environment unspecifying any period of disturbance. The first control unit performs a feedbac... | 08/02/2011 |
| 7990880 | Detector and method for detecting abnormality in time synchronization A transmitting and receiving section transmits data to which a time measured in a first device is attached, from the first device through a communication line, and receives the data in a second device. A communication abnormality detecting section detects an abnorma... | 08/02/2011 |
| 7978327 | Molecularity measurement instrument and molecularity measurement method There is provided a molecularity measurement instrument capable of working out the number of molecules in a sample by comparing a measured value of a light quantity with a theoretical light quantity per a single molecule, and a molecularity measurement method using ... | 07/12/2011 |
| 7965800 | Clock recovery apparatus A clock recovery apparatus for generating a recovery clock from received data may include, but is not limited to, first and second oscillators. The first oscillator generates a first signal having a first frequency. The first signal synchronizes with the received da... | 06/21/2011 |
| 7956990 | Biochip, biochip reader and biochip reading method A biochip for implementing analysis on the basis of the distribution of a quantity of light of fluorescent light generated at sites disposed thereon, the biochip having, markers formed thereon and defined previously in a positional relationship relative to the sites... | 06/07/2011 |
| 7948614 | Optical-fiber-characteristic measuring device and optical-fiber-characteristic measuring method A measurement precision is improved and a measurement range is extended by efficiently suppressing a noise level of integrated unnecessary components from non-correlation positions. Measuring means 33 detects the Brillouin gain of a probe light output from a ... | 05/24/2011 |
| 7935316 | Chemical reaction cartridge and method for using Disclosed is a chemical reaction cartridge including an elastic body with which at least a portion of the chemical reaction cartridge is formed and a plurality of chambers and a flow path to connect the plurality of chambers, which contain solution inside, and the s... | 05/03/2011 |
| 7929485 | Home agent and mobile communication system A home agent receives a communication packet sent out from a source terminal to a mobile terminal as a destination to transfer the communication packet to the mobile terminal connected to a foreign network. This home agent requests the mobile terminal, based on a me... | 04/19/2011 |
| 7925171 | Optical transmission apparatus An optical transmission apparatus according to the present invention comprises: a plurality of optical modulating sections serially connected to each other via optical fibers; driving sections corresponding to the optical modulating sections; delay amount varying se... | 04/12/2011 |
| 7924806 | Time synchronization system In a time synchronization system between wireless nodes, a first wireless node broadcasts a neighbor search packet, adjacent wireless nodes receive the neighbor search packet and then returns an adjacent response packet, the first wireless node selects the mediating... | 04/12/2011 |
| 7912563 | Safety control system A safety control system includes a plurality of safety control stations connected to a control bus to communicate with each other and with a distributed control system including a plurality of control stations connected to the control bus, wherein each of the plural... | 03/22/2011 |
| 7910357 | Correction method for the distribution of quantity of light and biochip-reader The present invention is characterized by the following points: In a biochip reader used for reading a measurement sample image by light beam irradiation, a correction method for the distribution of quantity of light which is devised to remove the influence o... | 03/22/2011 |
| 7893824 | Alarm control apparatus An alarm control apparatus which collects alarms from an equipment of a plant and handles the alarms includes a support information collecting section which adds support information for managing the equipment to the alarms. ... | 02/22/2011 |
| 7889331 | Bidirectional optical module and optical time domain reflectometer equipped with the bidirectional optical module A bidirectional optical module according to the present invention comprises light emitting elements 110, 130 that emit light to enter an optical fiber 71, a light receiving element 190 that receives light having exited the optical fiber 71 | 02/15/2011 |
| 7880868 | Optical time domain reflectometer An improvement is added to an optical time domain reflectometer for emitting pulsed light of invisible light to a measured optical fiber, receiving return light of the pulsed light by a light detection section, measuring the measured optical fiber, and emitting visi... | 02/01/2011 |
| 7849375 | Semiconductor test system A semiconductor test system includes: pin electronics (“PE”) cards each being operable to: a) apply a test pattern to device under tests (“DUTs”) each connected to the PE cards; b) capture patterns outputted in response to the test pattern from the DUTs; c) ... | 12/07/2010 |
| 7848662 | Delay interferometer and demodulator A delay interferometer and a demodulator including the delay interferometer and a balanced photodetector are provided. A half mirror splits an optical signal into first and second split beams of light which travel on first and second optical paths, respectively. A f... | 12/07/2010 |
| 7847952 | Delayed interferometer enabling a reduction of polarization-dependent frequency shift and demodulator An interferometer of the present invention includes: a splitting element which splits an incident light beam into a first split beam and a second split beam; and a first phase compensator which is positioned in an optical path of the first split beam, and which comp... | 12/07/2010 |
| 7877470 | Management system using scripts to transfer data among devices connected to a network A management system including: a management apparatus including a first control unit functioning as an agent; and at least one piece of field equipment connected to the management apparatus with communication connection, the field equipment including a field equipme... | 01/25/2011 |
| 7877232 | Metric based performance monitoring method and system A metric based performance monitoring a process control system is disclosed in which diagnostics are performed at multiple levels of the plant, results of the diagnostics converted into Key Performance Indicators and compared to predetermined benchmarks such that an... | 01/25/2011 |
| 7873273 | Apparatus for measuring the characteristics of an optical fiber An apparatus for measuring the characteristics of an optical fiber is provided. An optical pulse generator generates, from a coherent light, first and second optical pulses having a time interval which is equal to or shorter tan a life time of an acoustic wave in th... | 01/18/2011 |
