Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7264778 | Carbon monoxide sensor and method of use thereof Carbon monoxide sensors suitable for use in hydrogen feed streams and methods of use thereof are disclosed. The sensors are palladium metal/insulator/semiconductor (Pd-MIS) sensors which may possess a gate metal layer having uniform, Type 1, or non-uniform, Type 2, ... | 09/04/2007 |
| 7264701 | Reference electrode with non-blocking liquid junction A reference electrode traps silver ions and chloro complex ions leaching to an internal filling solution so that the blocking of the liquid junction can be prevented. A silver/silver chloride electrode can be provided as an internal electrode in an internal filling ... | 09/04/2007 |
| 7195703 | Electrode for analytical voltammetry An electrode for use in analytical voltammetry, wherein the electrode has a uniform composition and contains an alloy in a solid state, the alloy containing a pure metal or compound having a low overvoltage for hydrogen and a few percent of at least one second metal... | 03/27/2007 |
| 7189315 | Ion sensor and clinical analyzer using the same An ion sensor has a flow path through which a sample flows. An ion-exchange membrane is in contact with the sample in the sample flow path. An internal solution is provided on one side of the ion-exchange membrane. An internal electrode is provided so as to come in ... | 03/13/2007 |
| 7189314 | Method and apparatus for quantitative analysis A sensory apparatus including a substrate including a plurality of sensors to obtain an analyte profile, the sensors including an ion-selective sensor capable of measuring ion content and a chlorine sensor capable of measuring chlorine content, is disclosed. A metho... | 03/13/2007 |
| 7094330 | Heterogeneous membrane electrodes The present invention relates to planar electrochemical sensors with membrane coatings used to perform chemical analyses. The object of this invention is to provide unit-use disposable sensors of very simple and economical construction, preferably with only a single... | 08/22/2006 |
| 7067343 | ISFETs fabrication method Methods for fabricating ion sensitive field effect transistors (ISFETs) with SnO2 extended gates. A SnO2 detection film is formed on a substrate by sol-gel technology to serve as an extended gate. The SnO2 detection film is electrica... | 06/27/2006 |
| 7056431 | Method for electrochemical analyses Dental amalgam as an electrode material in voltammetry is provided having a very high overpotential to hydrogen. Accordingly, trace analyses can be carried out at potentials sufficiently negative to allow determination of e.g. zinc, cobalt, nickel and iron at trace ... | 06/06/2006 |
| 7033483 | Fluoride-sensitive electrode A fluoride-sensitive electrode having a tubular electrode shaft, a lanthanum fluoride crystal, which closes the end of the electrode shaft, an internal electrolyte sealed between the lanthanum fluoride crystal and a closure in the electrode shaft, and a contact wire... | 04/25/2006 |
| 7005108 | Insulator electrode devices Methods and insulator electrode devices for performing electrochemical reactions are disclosed. The devices consist of high specific surface area electrodes based on a channeled conducting base material that has been coated with an organic or inorganic insulating fi... | 02/28/2006 |
| 7005049 | Reference electrode having a microfluidic flowing liquid junction A flowing junction reference electrode comprises a microfluidic liquid junction member situated between a pressurized reference electrolyte solution and a sample solution. This liquid junction member has an array of nanochannels spanning the member and physically co... | 02/28/2006 |
| 6890715 | Sensors of conducting and insulating composites The present invention provides a class of sensors prepared from at least a first material having a positive temperature coefficient of resistance and a second non-conductive or insulating material compositionally different than the first material that show an increa... | 05/10/2005 |
| 6805781 | Electrode device with a solid state reference system The invention concerns an electrode device comprising an ion selective material, a solid state, inner reference system of sodium vanadium bronze and a contact material, where sodium may be reversibly intercalated, in the bronze. Such an electrode device may for inst... | 10/19/2004 |
| 6663756 | Microchip-type oxygen gas sensor based on differential potentiometry Disclosed is a microchip-based differential-type potentiometric oxygen gas sensor, which comprises a working electrode and a reference electrode. The working electrode is composed of a cobalt-plated electrode, a buffered hydrogel, and an ion sensitive gas... | 12/16/2003 |
| 6638408 | Method and device for separation of charged molecules by solution isoelectric focusing The invention provides a novel solution isoelectric focusing device and method that can reproducibly fractionate charged molecules into well-defined pools. This approach can be applied to mixtures of charged molecules, such as eukaryotic proteome samples ... | 10/28/2003 |
| 6579440 | Replaceable reference junction including an ion-barrier for an electrochemical sensor A reference junction for a reference half-cell, the reference junction including an ion-barrier membrane and being sized and shaped for removable receipt within a receptacle of a reference half-cell housing. The reference junction may be included in an el... | 06/17/2003 |
| 6572748 | Reference electrode A reference electrode (1) for electrochemical measurements includes a metallic palladium-containing electrode component (3) which is covered by a layer (4) formed of or containing a palladium compound poorly soluble in aqueous media. Positioned on layer (... | 06/03/2003 |
| 6540893 | Ion sensor An object of the present invention is to provide an electrode and a field effect transistor having excellent ion selectivity using a noncyclic peptide. In order to achieve the above object, the ion sensor of the present invention using a noncyclic peptide... | 04/01/2003 |
| 6540894 | Phosphate ion selective electrode and manufacturing method thereof A phosphate ion selective electrode, with which the detection limit is made small to enable measurement of phosphate ion concentrations of down to low concentration, and a method of manufacturing the abovementioned phosphate ion selective electrode, where... | 04/01/2003 |
| 6398931 | Combination ion-selective electrode with a replaceable sensing membrane An improved combination ion-selective electrode apparatus is provided that comprises an electrode body, a reference electrode, and an ion-sensing electrode. The reference electrode comprises a ion-permeable junction. A removable membrane cap contains a io... | 06/04/2002 |
| 6287438 | Sampling system for analytes which are fluid or in fluids and process for its production The invention concerns a sampling system and a process for its production. Such systems can easily be employed throughout in chemical and biochemical analysis. The sampling system should be simply constructed and universally usable alone and in combinatio... | 09/11/2001 |
| 6236075 | Ion sensitive transistor The present invention discloses a method of forming a metal layer by thermal evaporation or RF reactive sputtering in order to fabricate a light shielding layer for an ion sensitive field effect transistor. The multi-layered construction of the ion sensit... | 05/22/2001 |
| 6203758 | Micro-circuit system with array of functionalized micro-electrodes A micro-circuit for performing analyses of multimolecular interactions and for performing molecular syntheses, comprising: (a) a support; (b) at least one micro-electrode attached to the support, the micro-electrode being selectively electronically activa... | 03/20/2001 |
| 6132893 | pH-sensitive microsensor and a method of manufacturing a pH-sensitive microsensor A pH sensitive microsensor which comprises a substrate on which a sensor membrane is formed by laser ablation of a target and depositing the target material on the substrate.... | 10/17/2000 |
| 6117341 | Filter, apparatus including the filter and a method of use of the apparatus A filter has a first filter layer made of TiO2 of Ti4 O7 particles deposited on a second filter layer by stainless steel particles. The first layer has a smaller pore size than the second layer. The construction of the fil... | 09/12/2000 |
| 6068744 | Combination ISE and solutions therefor Described is a combination, PVC-membrane, Ion-Selective Electrode (ISE) with a replaceable sensing module and a single-junction, sleeve-type reference electrode. pH and ion-selective electrodes (ISEs) in the "Combination" configuration, i.e., single probe... | 05/30/2000 |
| 6066244 | Apparatus for use in electrical, e.g. electrochemical, measurement procedures, and its production and use, and composite assemblies incorporating the apparatus A composite electrode, comprising: a solid non-metallic substrate, (such as ceramic, glass, or epoxy resin,) and, bonded directly or indirectly to said substrate, a non-conducting matrix, incorporating particles which are accessible to the electrode surface and con... | 05/23/2000 |
| 6042714 | Method and chemical sensor for determining concentrations of hydrogen peroxide and its precursor in a liquid A new method which employs a mixed-valence cluster of Myz+ [Fe(II)(CN)6 ] coated on an electrode surface to determine hydrogen peroxide concentration electrochemically is developed. M of the mixed-valence compound can be C... | 03/28/2000 |
| 6022463 | Sensors with subminiature through holes The present invention is a sensor having an electrode formed in electrical contact with a subminiature through hole. Because of the small diameter of the through hole, the material that fills the through hole and the through hole itself have an essentiall... | 02/08/2000 |
| 6015481 | Ion selective sensors based on molybdenum bronzes New solid state pH and sodium ion sensitive metal-oxide-type compositions, sensors and methods are disclosed. Performance thereof was demonstrated at ambient temperature with single crystals of several molybdenum bronzes (i.e. Na0.9 Mo6 | 01/18/2000 |
| 5951837 | Composition and method for manufacturing ion selective electrode sensors This invention pertains to fluorophoric compositions of a 7-amino-coumarin derivative and methods of their use for enhancing visualization of various constituents of ion selective electrodes.... | 09/14/1999 |
| 5858452 | Method for fabricating wiring substrate with subminiature thru-holes The present invention is an electronic wiring substrate for sensors formed over a subminiature through hole. Because of the small diameter of the through hole, the material that fills the through hole and the through hole itself have an essentially neglig... | 01/12/1999 |
| 5840168 | Solid contact ion-selective electrode A new substrate for the construction of solid internal contact ion-selective electrode comprising a conductive and porous carbon matrix is described. The well-defined (i.e., fixed) interfacial potential between the organic electroactive phase and the inte... | 11/24/1998 |
| 5837454 | Process for the manufacture of wholly microfabricated biosensors An efficient method for the microfabrication of electronic devices which have been adapted for the analyses of biologically significant analyte species is described. The techniques of the present invention allow for close control over the dimensional feat... | 11/17/1998 |
| 5830338 | Combination ISE and solutions therefor Described is a combination, PVC-membrane, Ion-Selective Electrode (ISE) with a replaceable sensing module and a single-junction, sleeve-type reference electrode. pH and ion-selective electrodes (ISEs) in the "Combination" configuration, i.e., single probe... | 11/03/1998 |
| 5670115 | Hydrogen sensor A sensor for hydrogen is disclosed comprising an electrically insulating substrate carrying a thin amorphous film of co-deposited nickel and zirconium and an overlying film of palladium wherein during the operation of the sensor, hydrogen in a sample gas ... | 09/23/1997 |
| 5658451 | Method for calibration of a pH measuring element In a method for calibration of a pH measuring element whose ion-permeable, hydrophilic polymer layer is brought into contact with an aqueous solution prior to calibration, the aqueous solution is displaced or replaced by a gaseous calibrating medium, and ... | 08/19/1997 |
| 5656827 | Chemical sensor utilizing a chemically sensitive electrode in combination with thin diamond layers A solid state chemical sensing device is described in which a chemically sensitive electrode, and at least one diamond film are deposited on a conductive or insulating substrate. The device forms a sensing structure in which conduction of current through ... | 08/12/1997 |
| 5632874 | Ion selective ceramic membrane Ion selective ceramic membrane with high proton conductivity, which membrane is formed of lanthanide phosphate being doped with one or more metals Me from Group IIA of the Periodic Table and having a composition: Ln1-x Mex PO4 ... | 05/27/1997 |
| 5593558 | Oxygen concentration detector An oxygen concentration detector includes a one-end closed cylindrical oxygen sensing element having an inside electrode, outside electrode provided on the inner side and outer side respectively, an electrode protecting layer made up of ceramics porous me... | 01/14/1997 |
