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 |
| 8016991 | Potentiometric sensor device A potentiometric sensor device for measuring pH value is provided, which sensor device has two electrodes situated on a substrate and applied with the aid of thick-film technology. The two electrodes form an interdigital comb structure on the substrate. The interdig... | 09/13/2011 |
| 7909972 | Electrochemical sensor and method of manufacture An electrochemical sensor is provided that includes a housing having an outer wall, an axial bore circumscribed by the outer wall, and a barrier wall that aids in defining a reference cavity. The housing further including a plurality of cross members in spaced relat... | 03/22/2011 |
| 7862698 | Device and method for preparing an electrochemical sensor A device and method for preparing an electrochemical sensor may enable the sensor head thereof to be provided with an electrolyte and a membrane. The device may include a retaining means for the sensor in addition to means for depositing the electrolyte and means fo... | 01/04/2011 |
| 7837847 | High purity water pH sensor with shielded flowing liquid junction A pH sensor is provided. The pH sensor includes a body, a glass electrode, a reference electrode and a solution ground. The glass electrode is disposed on the body to contact a liquid sample. The reference electrode has a reference fill solution disposed within the ... | 11/23/2010 |
| 7799193 | Electrochemical sensor and method of manufacture An electrochemical sensor is provided that includes a housing having an outer wall, a plurality of longitudinal walls disposed within the outer wall, and a reference chamber housing a reference electrode. The longitudinal walls define a plurality of longitudinal cha... | 09/21/2010 |
| 7727370 | Reference pH sensor, preparation and application thereof A reference pH sensor, the preparation and application thereof. The reference pH sensor is an extended gate field effect transistor (EGFET) structure and comprises a metal oxide semiconductor field effect transistor (MOSFET) on a semiconductor substrate, a sensing u... | 06/01/2010 |
| 7604723 | Measuring device with penetrating electrode The invention relates to a measuring device having a penetrating electrode. Said elongated electrode of the measuring device is movably mounted in axial direction thereof. In case of a load or a shock, it can absorb said load to a given degree in the housing of said... | 10/20/2009 |
| 7431811 | Ruthenium oxide electrodes and fabrication method thereof A ruthenium oxide electrode. The ruthenium oxide electrode includes a substrate, a ruthenium oxide film formed thereon, and a conductive wire connecting to the ruthenium oxide film. The invention also provides a method of fabricating the ruthenium oxide electrode. | 10/07/2008 |
| 7429371 | Reversible oxidation of carbon nanotubes Carbon nanotubes have been reversibly and readily oxidized and reduced with common chemicals in solution, thereby allowing the nanotubes to be used as catalysts for chemical reactions and as stable charge storage devices. ... | 09/30/2008 |
| 7407566 | System and method for sensing using diamond based microelectrodes A method and system is disclosed for monitoring one or more characteristics associated with a fluid. An insulating layer comprising non-conducting diamond is positioned within a housing and has a surface exposed directly or indirectly to the fluid. A plurality of mi... | 08/05/2008 |
| 7394263 | Sensor arrangement with a plurality of potentiometric sensors The sensor arrangement includes: a least two sample chambers; at least two potentiometric FET-sensors, especially ISFET-sensors or ChemFET-sensors, having, in each case, a sensitive surface section, wherein each sensitive surface section lies in flow connection with... | 07/01/2008 |
| 7393442 | Ex-situ PEM fuel cell testing: towards visualizing gas diffusion The invention comprises novel apparatuses and testing methods for evaluating a fluid diffusion component. The apparatus includes a fluid capable of undergoing oxidation or reduction, a half-cell electrode assembly able to receive the fluid, and a change in acidity i... | 07/01/2008 |
| 7387716 | Polymer electrolyte, half cell for electrochemical measurements, and the use thereof A polymer electrolyte for an electrochemical half cell, in particular for a reference half cell, contains a polymer which as a first monomer component contains at least one alkyl methacrylate. The alkyl methacrylate has a substituted alkyl group with from three to s... | 06/17/2008 |
| 7378852 | Measuring device having a plurality of potentiometric electrode pairs situated on a substrate A measuring device having a plurality of potentiometric electrode pairs situated on a substrate is described. One of the electrodes of each electrode pair represents a reference electrode and the other electrode represents a pH-sensitive working electrode. The elect... | 05/27/2008 |
| 7314541 | Ion measuring composite electrode The present invention provides an improved ion measuring composite electrode, measuring instrument incorporating the composite electrode, and a manufacturing method for forming a preform of a composite double glass pipe for forming the ion measuring composite electr... | 01/01/2008 |
| 7291502 | Method for performing a non-invasive blood gas test A non-invasive blood gas test is carried out by a method that utilizes a venous blood sample together with a pulse oximeter and a plurality of mathematical equations. The method generates the following data points of the blood: (i) the pH level; (ii) the [H+] concen... | 11/06/2007 |
| 7276145 | PH electrode An object of the present invention is to suppress an electric potential drift as described above and improve pH measurement precision in order to obtain practical measurement precision in the dry-type multilayered film-type pH electrode. The present invention provid... | 10/02/2007 |
| 7276142 | Combination pH electrode with stable standard potential Disclosed are combination glass pH electrodes, the standard potential of which is stabilized by means one or more of the following structural modifications: (a) incorporating a noble metal internal element in the pH half-cell;... | 10/02/2007 |
| 7238267 | Self-condensing pH sensor The present invention pertains to an apparatus and a means of constructing a pH sensor that can detect changes in pH levels of humidified gases and liquid samples. When electronically connected to a computerized or analog display means, sensitive quantitative measur... | 07/03/2007 |
| 7225084 | Measuring device for a process technology A measuring device for process technology, useful in measuring- and/or cleaning- and/or calibration-installations in the field of process automation for measuring pH-values and/or redox potentials and/or other process parameters, and an operating method therefor. Th... | 05/29/2007 |
| 7206624 | Hydration monitoring circuitry for pH sensors The present invention pertains to an apparatus for evaluating the signal strength from the pH sensor to determine whether the sensor is hydrated sufficiently to accurately measure pH. This is accomplished by utilizing circuitry that periodically sends a low voltage ... | 04/17/2007 |
| 7196524 | Sensor plug-in head, particularly for a potentiometric sensor and potentiometric sensor comprising a sensor plug-in head For simplified supply of potentiometric sensors with a reference electrolyte, a sensor plug head for connecting to a cable connection piece of a potentiometric sensor is provided. The sensor plug head including, besides the usual electric connections, a supply conne... | 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 |
| 7182847 | System and probe for monitoring pH levels of a sample medium A system for monitoring a pH level of a sample medium is disclosed herein as including a pH probe having a pH-sensitive electrode, a reference electrode and a temperature electrode arranged within a housing of the pH probe. The probe housing generally includes a fle... | 02/27/2007 |
| 7179354 | Electrochemical sensor Disclosed is an electrochemical sensor comprising a work electrode and a reference electrode, said sensor adapted to measure the characteristics of a liquid under test, based on the relative electric potential difference and electric current between the work electro... | 02/20/2007 |
| 7179355 | Electrochemical cell Disclosed is an electrochemical sensor for measuring carbon monoxide in a gas sample, the sensor comprising a working electrode including a working electrode catalyst, and a diffusion restriction means for restricting the diffusion of the gas sample to the working e... | 02/20/2007 |
| 7176692 | Measuring probe for potentiometric measurements A measuring probe for potentiometric measurements has a housing (2) formed of an electrically insulating material that encloses at least one hollow space (8, 10) containing a half-cell element defining a first electrode. At least one additional electro... | 02/13/2007 |
| 7166201 | Self-condensing pH sensor The present invention pertains to an apparatus and a means of constructing a pH sensor that can detect changes in pH levels of humidified gases and liquid samples. When electronically connected to a computerized or analog display means, sensitive quantitative measur... | 01/23/2007 |
| 7124623 | Gas sensor A gas sensor having a first end and a second end includes a hollow cylindrical housing having a flange which protrudes from outer periphery thereof, a sensing element fixed in the housing, and a heat conduction inhibitor disposed on a first end of the flange so as t... | 10/24/2006 |
| 7041209 | pH-sensitive amperometric biosensor The present invention describes a new electrochemical biosensor comprising (i) a biocatalyst producing a pH change when interacting with the analyte to be determined and (ii) a compound exhibiting different redox properties both in its protonated and non-protonated ... | 05/09/2006 |
| 7025871 | Reference electrode having a microfluidic flowing liquid junction A flowing junction reference electrode exhibiting heretofore unattainable potentiometric characteristics is described, comprising a microfluidic liquid junction member that is situated between a reference electrolyte solution and a sample solution. This microfluidic... | 04/11/2006 |
| 6997883 | Diagnostic apparatus for determining the remineralization ability of tissue The invention relates to a diagnostic apparatus with which diseased hard tissue, in particular carious dental tissue, can be examined through a small working channel, to see whether it can be made healthy again by remineralization. This diagnosis apparatus tightly (... | 02/14/2006 |
| 6965791 | Implantable biosensor system, apparatus and method An implantable biosensor assembly and system includes an enzymatic sensor probe from which subcutaneous and interstitial glucose levels may be inferred. The assembly may be associated by direct percutaneous connection with electronics, such as for signal amplificati... | 11/15/2005 |
| 6926814 | Automatable measuring, cleaning and calibration device for pH-electrodes or electrodes for measuring redox potentials An automatable measuring, cleaning and calibrating device for pH-electrodes or electrodes for measuring redox potentials, specifically in process engineering, having an electrode armature which keeps the measuring electrode in an operating position or in a maintenan... | 08/09/2005 |
| 6875328 | pH sensor An inexpensive, high-performance pH sensor measure the surface of a solid substance in a simple manner, comprising an ion sensing part 2 which responds to pH, a reference electrode 3, a gel-form ion permeable substance 10, which has a predetermi... | 04/05/2005 |
| 6860984 | pH electrode and methods of preparing and using same A pH electrode having a pH-sensitive region on an electrically conductive support, said pH-sensitive region comprising a mixture of between 50% and 85% of the total mixture by weight of particles of a Group VA or G... | 03/01/2005 |
| 6841292 | Hydrogen sensor for fuel processors of a fuel cell A method and apparatus estimate hydrogen concentration in a reformate stream produced by a fuel processor of a fuel cell. A sensor measures carbon monoxide, carbon dioxide, and water in the reformate stream. A fuel meter controls fuel input to the fuel processor. An... | 01/11/2005 |
| 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 |
| 6653842 | Galvanic probes as pH and oxidation reduction potential sensors, control devices employing such probes, and related methods A galvanic probe comprises a sensor electrode and a reference electrode. The sensor electrode has an exposed surface that comprises a noble metal or antimony or bismuth, and, optionally, an oxide or hydroxide thereof. The reference electrode is spaced apa... | 11/25/2003 |
