In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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 |
| 7714694 | Compensating for linear and non-linear trimming-induced shift of temperature coefficient of resistance A compound resistor is used to compensate for trimming induced shift in temperature coefficient of resistance of a trimmable resistor. The compound resistor is composed of a first and second portion, at least one of the two portions being thermally trimmable, and th... | 05/11/2010 |
| 7369033 | Rotating type variable resistor The rotating type variable resistor includes a housing; a rotating member disposed to be rotatable in the housing; a ring-shaped support member having a conductive pattern at one surface of the support member and disposed at any one side between the housing and the ... | 05/06/2008 |
| 7345573 | Integration of thin film resistors having different TCRs into single die An integrated circuit structure including multiple thin film resistors having different sheet resistances and TCRs includes a first oxide layer (2) formed on a semiconductor substrate (1), a first thin film resistor (3) disposed on the first oxi... | 03/18/2008 |
| 7339110 | Solar cell and method of manufacture A solar cell that is readily manufactured using processing techniques which are less expensive than microelectronic circuit processing. In preferred embodiments, printing techniques are utilized in selectively forming masks for use in etching of silicon oxide and di... | 03/04/2008 |
| 7335555 | Buried-contact solar cells with self-doping contacts A buried-contact solar cell, in-process buried-contact solar cell components and methods for making buried contact solar cells wherein a self-doping contact material is placed in a plurality of buried-contact surface grooves. By combining groove doping and metalliza... | 02/26/2008 |
| 7307267 | Electric device with phase change material and parallel heater The electric device (1, 100) has a body (2, 102) having a resistor (7, 107) comprising a phase change material being changeable between a first phase and a second phase. The resistor (7, 107) has a first electrical resistance when the pha... | 12/11/2007 |
| 7288420 | Method for manufacturing an electro-optical device An object of the present invention is to provide an EL display device having high operation performance and reliability. A third passivation film 45 is disposed under the EL element 203 comprising a pixel electrode (anode) 46, an EL layer... | 10/30/2007 |
| 7251884 | Method to build robust mechanical structures on substrate surfaces A robust mechanical structure is provided to prevent small foundation structures formed on a substrate from detaching from the substrate surface. The strengthened structure is formed by plating a foundation metal layer on a seed layer and then embedding the plated f... | 08/07/2007 |
| 7253074 | Temperature-compensated resistor and fabrication method therefor A method for forming a temperature-compensated resistor on a semiconductor substrate is provided. A resistor element is formed on the semiconductor substrate. Terminal contacts are formed on the ends of the resistor element. A temperature-compensating configuration ... | 08/07/2007 |
| 7217981 | Tunable temperature coefficient of resistance resistors and method of fabricating same Tunable TCR resistors incorporated into integrated circuits and a method fabricating the tunable TCR resistors. The tunable TCR resistors including two or more resistors of two or more different materials having opposite polarity and different magnitude TCRs, the sa... | 05/15/2007 |
| 7154370 | High precision power resistors A high precision power resistor having the improved property of reduced resistance change due to power is disclosed. The resistor includes a substrate having first and second flat surfaces and having a shape and a composition; a resistive foil having a low TCR of ab... | 12/26/2006 |
| 7097110 | Temperature compensation systems and methods for use with read/write heads in magnetic storage devices Disclosed herein are methods and systems for sensing and controlling the temperature of a resistive element configured for use in a read/write head of a magnetic data storage device. In one embodiment, a method includes detecting a voltage across the resistive eleme... | 08/29/2006 |
| 7042232 | Cable and substrate compensating custom resistor A compensating resistor includes a substrate with a first termination at one end and a second termination at the other end. A frontside resistor is on the frontside of the substrate and extends between the first termination and the second termination. A backside res... | 05/09/2006 |
| 7012499 | Method of fabrication of thin film resistor with 0 TCR A thin film resistor that has a substantially zero TCR is provided as well as a method for fabricating the same. The thin film resistor includes at least two resistor materials located over one another. Each resistor material has a different temperature coefficient ... | 03/14/2006 |
| 6960731 | Contact supporting shaft for a low-voltage power circuit breaker A rotating contact supporting shaft for a low-voltage power circuit breaker, whose particularity consists of the fact that it has a modular structure that comprises, along the rotation axis, at least one first and one second supporting module (10, 20), each m... | 11/01/2005 |
| 6960979 | Low temperature coefficient resistor A resistor having a desired temperature coefficient of resistance and a total electrical resistance. A first resistor segment has a first temperature coefficient of resistance and a first electrical resistance. A second resistor segment has a second temperature coef... | 11/01/2005 |
| 6880234 | Method for thin film NTC thermistor A method for manufacturing a thin film negative temperature coefficient thermistor is disclosed. The method includes selecting a negative temperature coefficient of resistance versus temperature curve, selecting a mixture of metal film materials to provide the negat... | 04/19/2005 |
| 6700473 | Pressure transducer employing on-chip resistor compensation A dielectrically isolated temperature compensated pressure transducer including: a wafer including a deflectable diaphragm formed therein, the diaphragm being capable of deflecting in response to an applied pressure, and the diaphragm defining an active r... | 03/02/2004 |
| 6646539 | Temperature-compensated semiconductor resistor and semiconductor integrated circuit having the semiconductor resistor A temperature-compensated semiconductor resistor includes two series-connected semiconductor resistance elements having mutually inverse resistive temperature-dependent responses in a temperature range of interest. The semiconductor resistance elements ar... | 11/11/2003 |
| 6624737 | Voltage regulated circuit with well resistor divider This invention relates to a voltage regulated circuit, more particularly, to a voltage regulated circuit with a well resistor divider. The present invention applies two well resistors act as the voltage regulated circuit and uses the characteristic of the... | 09/23/2003 |
| 6621404 | Low temperature coefficient resistor A resistor having a desired temperature coefficient of resistance and a total electrical resistance. A first resistor segment has a first temperature coefficient of resistance and a first electrical resistance. A second resistor segment has a second tempe... | 09/16/2003 |
| 6492709 | Arrangement for compensating for temperature dependent variations in surface resistance of a resistor on a chip To compensate for temperature dependent variations and process variations in surface resistance of a main resistor (R1) on a chip (1), one or more compensating resistors (R11, R12. . . R1n) can be connected in series with the first resistor (R1) via norma... | 12/10/2002 |
| 6259350 | Sensor and method for manufacturing a sensor With a sensor and method, it is possible for platinum resistor elements to be used advantageously as heating elements, temperature sensors, printed circuit traces, or as chemically resistant electron beam sensitive layers. To ensure a long-lasting adhesio... | 07/10/2001 |
| 6211769 | System to minimize the temperature coefficient of resistance of passive resistors in an integrated circuit process flow An integrated circuit containing a resistor and the resistor per se. The circuit includes a substrate (2), a semiconductor resistor (3) on the substrate and a layer of electrically insulating material (5) disposed over the substrate and the semiconductor ... | 04/03/2001 |
| 6166619 | Overcurrent limiter having inductive compensation Current limiters, preferably PTC resistors, are used for limiting short-circuit current when connected in series to capacitors and converter valves. Protective devices operating with these PTC resistors are able to work reversibly and respond without arci... | 12/26/2000 |
| 6153861 | Heating element for lambda sensors A heating element, preferably for oblong plate-shaped sensors for measuring oxygen concentration in internal combustion engine exhaust gas, has a conductive heating strip at one end of the heating element and electrical conductors which are connected elec... | 11/28/2000 |
| 6097276 | Electric resistor having positive and negative TCR portions A description is given of a precision resistor. The resistor comprises a substrate having two connections which are electrically interconnected via a resistance path, said resistance path comprising a first path portion having a positive TCR and a second ... | 08/01/2000 |
| 5889459 | Metal oxide film resistor According to the present invention, there is provided a metal oxide film resistor which has an insulating substrate, a metal oxide resistive film having at least a metal oxide film having a positive temperature coefficient of resistance and/or a metal oxi... | 03/30/1999 |
| 5370458 | Monolithic microwave power sensor A monolithic integrated circuit power sensor provides a monolithic integrated circuit substrate a conversion element formed either on or in the substrate for converting microwave energy into heat, an electrically insulating dielectric layer affixed to the... | 12/06/1994 |
| 4894636 | Oil leakage detection device An oil leakage detection device is provided having a detection unit comprising: (a) an oil leakage detecting sensor which exhibits a positive resistance-temperature characteristic in response to changes in temperature, connected, in series, to (b) an oil ... | 01/16/1990 |
| 4788521 | Temperature compensation system for piezoresistive pressure sensor A temperature compensation scheme for a piezoresistive pressure sensor utilizing resistors with carefully chosen temperature coefficients of resistivity to provide a totally passive network.... | 11/29/1988 |
| 4622856 | Sensor with polycrystalline silicon resistors Sensor with polycrystalline silicon resistors which are applied to a substrate and are covered with a dielectric passivating layer, characterized by the feature that the resistors are thermally adapted by targeted adjustment of their dopings and by suitab... | 11/18/1986 |
| 4541898 | Method for heating A heating element comprises a resistor comprising a plurality of fine particles or thin films having a negative temperature coefficient of electrical resistance, and highly resistant region layers interposed between the fine particles or thin films, at le... | 09/17/1985 |
| 4510813 | Temperature compensation circuit for strain gauges A temperature compensation circuit for strain gauges fixed to an object to be measured and adapted to take out an output conforming to a strain by being fed with a constant voltage, wherein a compensation resistors in the form of a combination of two or m... | 04/16/1985 |
| 4500865 | Fluid leakage detecting element A fluid leakage detecting element comprises a heat generating resistive member and a temperature compensating resistive member disposed on a substrate. Each of the resistive members is prepared in the form of a paste of a metal which has a high temperatur... | 02/19/1985 |
| 4494406 | Means for measuring large area mass flow Improved structure for measuring the air flow in large conduits, such as those used to supply air conditioning and heating ducts, by sampling substantially all of the cross sectional area of the conduit in a given transverse plane to obtain an average ele... | 01/22/1985 |
| 4464646 | Controlled temperature coefficient thin-film circuit element To form a temperature sensor, for example suitable in an automotive vehicle, to determine ambient temperatures, or to provide a temperature compensated thin-film circuit, for example for incorporation with an oscillator circuit, two stable thin-film layer... | 08/07/1984 |
| 4462018 | Semiconductor strain gauge with integral compensation resistors A transducer operating on the strain gauge principle having integral temperature compensation and calibration resistors is disclosed. In the presently preferred embodiment, a silicon dioxide layer is disposed on a silicon substrate. Platinum alloy strain ... | 07/24/1984 |
| 4454495 | Layered ultra-thin coherent structures used as electrical resistors having low temperature coefficient of resistivity A thin film resistor having a controlled temperature coefficient of resistance (TCR) ranging from negative to positive degrees kelvin and having relatively high resistivity. The resistor is a multilayer superlattice crystal containing a plurality of alter... | 06/12/1984 |
| 4299130 | Thin film strain gage apparatus with unstrained temperature compensation resistances A thin film strain gage transducer includes temperature compensation resistances on an unstrained portion of the flexure element of the transducer. The compensation resistances are formed of the same material as the electrical leads interconnecting the st... | 11/10/1981 |