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| Number | Title | Issue Date |
| 7419831 | Method and apparatus for determination of water and for normal phase liquid chromatography A method for calibrating an analysis instrument, e.g., a gas chromatograph, for water analysis that includes four steps. The first step is to continuously remove water from a liquid that contains water to produce a liquid containing a reduced amount of water such as... | 09/02/2008 |
| 7416894 | Stable water standard The invention relates to water standards that are producible by grounding and mixing at least one component abounding in water and one water-free or low water component each. The inventive water standards are characterized by a good storage stability. They are suita... | 08/26/2008 |
| 7347778 | Gaming machine system having automatic reporting feature The present invention relates to a method of reporting alterations to the operation of a gaming machine. The method includes operating the gaming machine in a standard mode of operation, and subsequently altering the standard mode of operation. In response to this a... | 03/25/2008 |
| 7338372 | Reconfigurable gaming machine A gaming machine has at least one video screen, but preferably three. One screen displays a primary game and the other two screens preferably display pay tables, a secondary game, or artwork related to the primary and/or secondary game. The content of the video scre... | 03/04/2008 |
| 7313602 | Server, management system, and management control method A requester accesses a collection center system (4) and requests collection of expendables (S302). The collection center system (4) confirms actually collected expendables (S312) and gives a point to the user as the requester. For lump-su... | 12/25/2007 |
| 7247485 | Karl Fischer reagent Karl Fischer reagent comprising iodide, sulphur dioxide with an initial concentration above 0.5 M, and imidazole/imidazole derivative dissolved in alcoholic solvent, whereby the molar ratio between the initial imidazole/imidazole derivative concentration and the ini... | 07/24/2007 |
| 7214537 | Real-time component monitoring and replenishment system for multicomponent fluids A multicomponent fluid composition monitoring and compositional control system, in which a component analysis is effected by titration or other analytical procedure, for one or more components of interest, and a computational means then is employed to determine and ... | 05/08/2007 |
| 7182912 | Fluid handling apparatus for an automated analyzer An analyzer for performing automated assay testing. The analyzer includes a storage and conveyor system for conveying cuvettes to an incubation or processing conveyor, a storage and selection system for test sample containers, a storage and selection system for reag... | 02/27/2007 |
| 7162728 | System and method to provide audio enhancements and preferences for interactive television Audio enhancements can be provided for a shopping channel of an interactive television system. The audio enhancements allow a viewer of the shopping channel to customize the audio portion of the shopping experience, as well as providing the viewer with instructional... | 01/09/2007 |
| 7138240 | Methods of assaying receptor activity Described are methods of detecting G-protein coupled receptor (GPCR) activity in vivo and in vitro; methods of assaying GPCR activity; and methods of screening for GPCR ligands, G Protein-coupled receptor kinase (GRK) activity, and compounds that interact with compo... | 11/21/2006 |
| 7122376 | Calibration standards, methods, and kits for water determination The invention relates to a formed tablet calibration standard-reagent for calibrating Karl Fischer reactions for determining water content in a substance, the reagent containing a first component, namely sodium tartrate dihydrate, and a second component, namely magn... | 10/17/2006 |
| 7097562 | Peer-to-peer distributed gaming application network A method and a system of using a gaming network having a server in communication with a plurality of gaming terminals to share gaming applications directly between selected gaming terminals using a peer-to-peer type communications architecture. The method and system... | 08/29/2006 |
| 7049146 | Calibration standards, methods, and kits for water determination The present invention relates to a formed tablet calibration standard-reagent for Karl Fischer reactions to determine the water content of substances, such as pharmaceuticals, food stuffs, and oils. ... | 05/23/2006 |
| 7039643 | System, method and apparatus for converting and integrating media files The present invention teaches a digital media file conversion and integration system including a server coupled to the Internet to allow users to download media files to a server the Internet. The system contains devices to screen, compress, and update the media fil... | 05/02/2006 |
| 6946298 | Karl fischer reagent A reagent for the determination of water content of a sample according to the Karl Fischer method is disclosed. The reagent comprises a base component comprised of a mixture of imidazole and a substituted imidazole. Preferably, the Karl Fischer reagent is a one comp... | 09/20/2005 |
| 6372505 | Process and apparatus for titrating In a process for titrating substances by adding increments of a titrant in time intervals, the course of the reaction is monitored in its approach toward the end point (EP), and the addition of titrant is controlled. At least one differential component is... | 04/16/2002 |
| 6315888 | Method of constant-current polarization voltage and apparatus for Karl-Fischer technique A constant-current polarization voltage detecting method includes step of feeding to a detecting electrode a predetermined minute current in a pulse form, and detecting sequentially a polarization voltage at each time of feeding the pulsating current, in ... | 11/13/2001 |
| 6131442 | Method of wood chip moisture analysis A method of determining the moisture content in wood in which a sample of the wood being tested is first frozen with liquid nitrogen, homogenized and a test sample is placed in a Karl Fischer titration system. The test sample is placed into a solvent solu... | 10/17/2000 |
| 5962328 | Electrolytic solution fork Karl Fischer coulometric titration and method for water content determination using the electrolytic solution An electrolytic solution for Karl Fischer coulometric titration is disclosed which consists mainly of an amine, sulfur dioxide, iodide ions, and a solvent which is a mixed solvent comprising (a) propylene carbonate and (b) a dialkylene glycol monoalkyl et... | 10/05/1999 |
| 5750404 | Reagent for the determination of water AMD ene-diols or thiols Novel reagents and the rapid technique were developed for the simultaneous determination of water and ene-diols or thiols in chemical products, drugs and other materials which are inaccessible for direct K. Fischer titration. The reagents include iodine, ... | 05/12/1998 |
| 5567618 | Karl Fischer reagent The present invention relates to a Karl Fischer reagent for the determination of water, characterized in that it contains tetrahydrofurfuryl alcohol (THFA) as alcohol component.... | 10/22/1996 |
| 5466606 | Use of N-methylformamide as solvent for the Karl Fischer titration The invention relates to the use of N-methylformamide as solvent in the determination of water by the Karl Fischer method.... | 11/14/1995 |
| 5453377 | Methods for making iodine-free Karl Fischer reagents Various methods are described for producing volumetric one-component iodine-free Karl Fischer reagents useful for determining the water content of a sample, the reagents containing triiodide as the dominant oxidizing species. The reagents contain a reduci... | 09/26/1995 |
| 5401662 | Method and reagent for the determination of water In the method for the determination of water, the sample is admixed with a molar 1:1 adduct of sulphur dioxide with an amine having a pKA of more than 6, dissolved in an aprotic solvent, and is oxidized with iodine.... | 03/28/1995 |
| 5389545 | Reagents, methods and kits for water determination An essentially iodine-free and pyridine-free single component reagent for volumetric water analysis using the Karl Fischer reaction, a process for making the reagent, and the use of the reagent to determine the water content of a sample. The reagent conta... | 02/14/1995 |
| 5340541 | Automated Karl Fischer titration apparatus and method Automation of the coulometric Karl Fischer titration has allowed for the accurate, precise determination of moisture content of lyophilized hGH formulations. The system of the present invention utilizes a vented, two-hole sampling/dispensing probe that di... | 08/23/1994 |
| 5292413 | Catholyte for the Karl Fischer coulometric water determination The present invention relates to a catholyte for the Karl Fischer coulometric water determination, which is characterized in that it is composed of a solution of one or more salts of an organic nitrogen base and acid in a solvent.... | 03/08/1994 |
| 5246863 | Karl Fischer titration techniques An improved technique and apparatus for automatic titration for determining the water content of a sample by a Karl Fischer (K.F.) reaction. Rather than requiring titration from one endpoint to another identical endpoint, each determination is made using ... | 09/21/1993 |
| 5187101 | Electrolytic solution for Karl Fischer's coulometric titration and method for measuring water content using same An electrolytic solution for Karl Fischer's coulometric titration comprising a iodide ion, sulfur dioxide, a basic compound and a solvent, and a method for measuring a water content using the same are disclosed. In the electrolytic solution, the basic com... | 02/16/1993 |
| 5179024 | Sealed vials containing improved Karl Fischer solutions, and process for water determination using these vials An improved K.F. solution for colorimetric analysis to determine the water content of an unknown sample, and an improved sealed vial or ampule containing this solution and a process for determining water content using this solution and the sealed vial. Th... | 01/12/1993 |
| 5139955 | Reagent, cell and method for the coulometric determination of water Reagent for the coulometric determination of water in a membrane-free cell, composed of an alcoholic solvent or solvent mixture in which imidazole and/or an imidazole derivative and/or diethanolamine and/or triethanolamine and sulphur dioxide and an iodid... | 08/18/1992 |
| 5102804 | Karl-Fischer reagent, kit, and a process for the determination of water with the aid of this reagent The invention relates to a Karl-Fischer reagent, kit and a process for the determination of water with the aid of this reagent, which contains, instead of iodine, an approximately equimolar amount of iodine halides and salts of aromatic nitrogen-containin... | 04/07/1992 |
| 5086000 | Process for the preparation of alkylene-bis(2-pyridylamine) compounds and Karl Fischer reagents and methods utilizing such compounds The invention relates to a process for the preparation of alkylenebis(2-pyridylamine) compounds by reacting 2-halopyridine derivatives with alkylenediamines and to the use of these compounds in a Karl Fischer reagent as are indicated for the determination... | 02/04/1992 |
| 4929314 | Coulometric titrator apparatus and method A high pressure coulometric titration apparatus features a pressure vessel for containing a titration vessel, which is capable of being subjected to a pressure above the vaporization pressure of the sample to be analyzed. A back pressure regulator is empl... | 05/29/1990 |
| 4874709 | Solvent and method for the Karl-Fischer determination of water The invention relates to a solvent for the Karl-Fischer determination of water and to a process for the determination of water using a solvent system which contains at least one higher alcohol as well as the customary Karl-Fischer solvents.... | 10/17/1989 |
| 4851352 | Solvent composition for the determination of water by the Karl Fischer method A solvent composition useful for the determination of water by the Karl Fischer method, comprises an ethylene glycol monoalkyl ether and a tetraalkylated ammonium salt.... | 07/25/1989 |
| 4802957 | Method for measuring the water content of a solid sample using Karl Fischer's coulometric titration An electrolytic solution for Karl Fischer's coulometric titation and a method for measuring the water content of a sample using the same are disclosed. The electrolytic solution contains iodine or an iodide, sulfur dioxide, an amine and a solvent, wherein... | 02/07/1989 |
| 4786602 | Method for colorimetric analysis of water content A method for the colorimetric determination of water content of an unknown sample, using the Karl Fischer reaction. The Karl Fischer reagent in a container has added to it a dye whose optical absorption preferably does not overlap with the optical absorpt... | 11/22/1988 |
| 4748126 | Pyridine-free Karl-Fischer reagent and a process for the determination of water therewith A pyridine-free Karl-Fischer reagent for the determination of water which comprises (a) a solvent solution containing sulfur dioxide and an amine in a Karl-Fischer reagent solvent, the amine being functionally equivalent to pyridine in a Karl-Fischer reag... | 05/31/1988 |
| 4740471 | Karl Fischer titration agent and method For the titrimetric determination of small amounts of water, a Karl Fischer reagent is used which contains sulfur dioxide, iodine and a nitrogen base as essential components. The use of specific nitrogen bases in place of pyridine, which is conventionally... | 04/26/1988 |
