Famous Patents
Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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 |
| 7484501 | Fuel vapor treatment apparatus A fuel vapor treatment apparatus includes a first canister purges fuel vapor into an intake passage of an engine through a purge passage, which communicates with a first detection passage having a throttle. A second canister is located on an opposite side of the pur... | 02/03/2009 |
| 7474035 | Driving device for piezoelectric actuator In a driving device for a piezoelectric actuator, when a driving signal is input, a charging switch is repetitively turned on/off to charge and expand the piezoelectric actuator under the state that a discharging switch is turned off. Thereafter, when the input of t... | 01/06/2009 |
| 7472670 | Valve timing controller In a valve timing controller, the guide-groove biases the moving element in a direction in which the moving element slides with respect to a radial line connecting a center of the guide-rotational element and the moving element, when the guide-rotational element rel... | 01/06/2009 |
| 7458351 | Valve timing controller A valve timing controller includes a guide rotation member provided with a guide groove, a bearing rotation member radially supporting the guide rotation member, and a plurality of movable bodies sliding in the guide groove in accordance with a rotation of the guide... | 12/02/2008 |
| 7449822 | Structure of spark plug ensuring stability in location of production of sparks A small-sized spark plug is provided which ensures the stability in the location of production of sparks between center and ground electrodes. The center and ground electrodes have joined thereon cylindrical members such as noble metal chips which are opposed to eac... | 11/11/2008 |
| 7446499 | Position detecting apparatus having electric motor and method for detecting position A reference position detecting apparatus includes an electric motor and a motor control unit. The electric motor includes a plurality of first coils and a plurality of second coils. The electric motor further includes a rotor that rotates when at least one of the pl... | 11/04/2008 |
| 7444228 | Data processor for processing pieces of data being successively sampled at intervals In a data processor for processing pieces of input data successively sampled, a memory unit and a plurality of data transferring units for transferring data are provided. Each of the plurality of data transferring units has an upper limit number of data items succes... | 10/28/2008 |
| 7441527 | Air suction device An air suction device is provided with an air suction system having at least one capacity-enlarged portion, a compression pump compressing air in synchronization with operation of an engine, a compression air control unit, and a vibration plate which is vibration-ex... | 10/28/2008 |
| 7442147 | Vehicle control system A controller determines the state of the range detector on the basis of the detection signals detected by the range detector, then when the range detector is determined to be in an abnormal condition, the controller moves the shift-changing valve until the movement ... | 10/28/2008 |
| 7418952 | Evaporative fuel treatment system An evaporative fuel treatment system is disclosed that includes a canister, a detection passage having a reduced area portion, and switching device that switches fluid communication. Also included is a depressurizing device for depressurizing the detection passage c... | 09/02/2008 |
| 7408294 | Spark plug with high capability to ignite air-fuel mixture A spark plug according to the invention includes a metal shell, a hollow insulator, a center electrode, and a ground electrode. The insulator has a first end protruding into a combustion chamber of an engine and a second end opposite to the first end in the lengthwi... | 08/05/2008 |
| 7392800 | Fuel vapor treatment A fuel vapor treatment system includes a canister containing an adsorbent, a detector detecting a concentration of a fuel vapor, a purge passage for introducing the mixture gas into an engine, and an ECU which controls a purge based on a detected fuel vapor conditio... | 07/01/2008 |
| 7383817 | Injector An injector includes a boosting mechanism and a nozzle. The boosting mechanism boosts fuel, and the nozzle injects and supplies the fuel boosted by the boosting mechanism. The boosting mechanism includes a tubular piston and a column piston. The tubular piston has a... | 06/10/2008 |
| 7383826 | Fuel vapor treatment apparatus, system having the same, method for operating the same A fuel vapor treatment apparatus connects with a fuel tank, which produces fuel vapor to be purged into an intake passage of an internal combustion engine through a purge passage. The fuel vapor treatment apparatus includes a state measuring unit that includes a mea... | 06/10/2008 |
| 7350496 | Intake muffler A resonator is connected with an intake air pipe and forms a resonant chamber therein. The resonator includes a diaphragm, which is generally planar and is disposed between an air passage of the intake air pipe and the resonant chamber. The diaphragm forms multiple ... | 04/01/2008 |
| 7352173 | Turning angle detector External magnetic members are provided outside the outer periphery of a rotor. When the rotor is positioned around its turning angle of 70 degrees, part of the magnetic fluxes generated by magnets pass through the external magnetic members. This makes it possible to... | 04/01/2008 |
| 7339371 | Rotation angle detector A rotation angle detector for detecting change in the magnetic flux has a magnetic sensor being disposed at a position in a space between an outer surface of a shaft and a periphery of the magnetic flux generation means. A supplementary magnet is also used in a spac... | 03/04/2008 |
| 7319320 | Rotation angle detecting device An improved rotation angle detecting device that detects a rotation angle of a first member relative to a second member is proposed. The rotation angle detecting device includes a magnet unit fixed to the first member and a pair of magnetic sensors fixed to the seco... | 01/15/2008 |
| 7313949 | Combustion chamber pressure sensor equipped with damper body for attenuating transmitted engine vibration A combustion chamber pressure sensor for an internal combustion engine includes an elongated pressure transmitting member having one end exposed to the interior of an engine cylinder and the opposite end contacting a pressure sensing element which generates a pressu... | 01/01/2008 |
| 7282844 | High performance, long-life spark plug A spark plug includes a metal shell, an insulator, a center electrode, a ground electrode, a first noble metal chip, and a second noble metal chip. The metal shell has a threaded portion with an outer diameter of equal to or less than 14 mm for installing the spark ... | 10/16/2007 |
| 7272876 | Method for fabricating laminate-type dielectric element A method of producing a laminated dielectric element of high quality, free of delamination. A method of producing a laminated dielectric element 1 by alternately laminating dielectric ceramic layers 12 and base metal electrode layers 13, compris... | 09/25/2007 |
| 7267116 | Spark plug and ignition apparatus using same A power-saving type of ignition apparatus is provided with a spark plug of which electrodes (30, 40) are regulated in their shapes to lower an amount of energy required for its ignition. To face to a tip (31) of a center electrode (30) extending... | 09/11/2007 |
| 7217083 | Regenerative pump having blades received in fluid passage A casing of a regenerative pump forms a generally annular fluid passage, which conducts a fluid. An impeller is rotatably received in the casing and has a plurality of blades, which are arranged one after another in a circumferential direction to provide kinetic ene... | 05/15/2007 |
| 7198039 | Valve control device reducing noise A valve control device corrects a change rate of an opening degree of a valve in accordance with engine rotation speed when deposit elimination operation is performed. The valve control device corrects an inclination between a positive maximum opening degree and a n... | 04/03/2007 |
| 7191961 | Injection hole plate and fuel injection apparatus having the same In an injection hole plate of a fuel injection apparatus, a second-side hole section of each injection hole extends from a downstream end of a base wall of the injection hole plate and is communicated with first-side hole sections, which extends from an upstream end... | 03/20/2007 |
| 7182846 | Hydrogen-containing gas measurement sensor element and measuring method using same A gas sensor element is provided which is designed to measure the concentration of hydrogen-containing gas accurately. The sensor element includes an oxygen pump cell working to keep the concentration of oxygen contained in measurement gasses entering a measurement ... | 02/27/2007 |
| 7182052 | Valve timing controller A shoe housing receives a driving force from a crankshaft and a vane rotor rotates with a camshaft in combination. The vane rotor is received in the shoe housing in such a way as to freely turn. Each of the vanes of the vane rotor partitions each of three receiving ... | 02/27/2007 |
| 7183702 | Spark plug with high insulation properties and high capability to ignite air-fuel mixture A spark plug according to the invention includes a metal shell that has a threaded portion with an outer diameter of 10 mm or less, or equal to 12 mm, an insulator, a center electrode, and a ground electrode. The spark plug has an improved structure in which an end ... | 02/27/2007 |
| 7170219 | Spark plug with multiple ground electrodes A spark plug according to the present invention includes a metal shell, an insulator, a cylindrical center electrode, a first ground electrode, and a second ground electrode. The first ground electrode is aligned with the center electrode in the axial direction of t... | 01/30/2007 |
| 7122948 | Spark plug having enhanced capability to ignite air-fuel mixture A spark plug includes a metal shell, an insulator, a center electrode, and a ground electrode. The metal shell has a threaded portion with an outer diameter of equal to or less than 10 mm, or equal to 12 mm for installing the spark plug in an internal combustion eng... | 10/17/2006 |
| 7109646 | Spark plug having center electrode with columnar portion and conical portion A spark plug is composed of a main metal fitting having a cylindrical structure, an insulator disposed inside the cylindrical main metal fitting, a center electrode fitted in the insulator in a manner that a front end portion of the center electrode projects outward... | 09/19/2006 |
| 7086363 | Spark plug and ignition apparatus using same A power-saving type of ignition apparatus is provided with a spark plug of which electrodes (30, 40) are regulated in their shapes to lower an amount of energy required for its ignition. To face to a tip (31) of a center electrode (30) extending... | 08/08/2006 |
| 7071683 | Rotation angle sensing device having enlarged detectable angle range A rotation angle sensing device for detecting a relative rotation angle between a rotor and a stator includes main magnets, fixed in the rotor, and hole ICs, fixed in the stator. The hole ICs detect magnetic flux of the main magnets , and the relative rotation angle... | 07/04/2006 |
| 7019516 | Magnetic sensor unit less responsive to leaking magnetic flux A magnetic sensor unit includes an actuator motor and a magnetic position sensor. The actuator motor has a magnetic circuit including motor magnets. The magnetic position sensor includes a sensor magnet and a hall element for detecting magnetic flux. Magnet clearanc... | 03/28/2006 |
| 7008471 | Filter and canister having the same A canister is connected to a fuel tank to adsorb fuel vapor vaporized in the fuel tank and includes a canister housing and a canister main body, which is received in the canister housing and communicates with the fuel tank at one end. The canister housing includes a... | 03/07/2006 |
| 7007543 | Air-fuel ratio sensor An air-fuel ratio sensor includes a sensor element inserted through a cylindrical housing for detecting an air-fuel ratio in an atmosphere of unburnt gas, and a measured gas side cover disposed on an end of the cylindrical housing so as to cover the sensor element a... | 03/07/2006 |
| 6994780 | Gas sensor and method of detecting gas concentration A gas sensor includes a measurement gas chamber into which a measurement gas is introduced. An oxygen pumping cell adjusts an oxygen concentration in the measurement gas chamber. An oxygen monitor cell has a monitor electrode exposed in the measurement gas chamber. ... | 02/07/2006 |
| 6966215 | Failure diagnosis method and failure diagnosis device of evaporated fuel treating unit An apparatus detects leak in a fuel vapor treatment system which is referred to as an evaporation system. The apparatus measures a required time T2 that is required for decreasing pressure in the evaporation system from P0 to P1 while opening a ... | 11/22/2005 |
| 6867583 | Displacement sensor A displacement sensor precisely detects displacement of a moving body in a rectilinear movement direction even if the moving body rotates. The sensor includes a detector and a magnet. The cross sectional area of the permanent magnet in a plane perpendicular to an ax... | 03/15/2005 |
| 6848401 | Valve timing adjusting device A valve timing adjusting device adjusts valve timing by shifting rotational phase of a camshaft relative to a crankshaft. The device has an electric motor for rotating a rotor member that drives and moves a phase defining member to a required position. The phase def... | 02/01/2005 |
