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Searching: chemistry





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Patent # Description
US-5,505,828 Calibration solutions useful for analysis of biological fluids and methods employing same
Novel calibration solutions are provided which are useful, for example, with sensor assemblies used for analysis of CO.sub.2, and optionally, for concurrent...
US-5,504,411 Battery charger contact protection circuit
A battery charger contact protection circuit (10) including a metal oxide field effect transistor (16) is provided. The battery charger contact protection...
US-5,502,236 Method for the production of (3-alkoxycarbonyl-2-butenyl)triphenylphosphonium salts
Novel processes and intermediates useful for the manufacture of the Wittig ester salts are disclosed. The Wittig ester salts are known as important CS building...
US-5,502,226 Process of preparing .omega.-hydroxy acids
A new synthesis of .omega.-hydroxy acids, which employs commercially available starting materials and lowers the cost of production. The process involves...
US-5,502,025 Safening herbicidal pyrazolylsulfonylureas
The disclosure herein relates to the safening of crops from injury by herbicidal pyrazolosulfonylureas alone or combined with co-herbicides from various classes...
US-5,494,590 Method of using anticoagulant solution in blood separation
An anticoagulant solution of sodium citrate for use in blood chemistry-related techniques and apparatus is disclosed. The anticoagulant solution should include...
US-5,494,258 Valve
A valve for regulating the flow of a liquid, for example in liquid chromatography, comprises a valve seat and a valve ball which are made of electrically...
US-5,492,597 Method of etching WSi.sub.x films
The present invention teaches a method for etching a tungsten silicide (WSi.sub.x) film overlying a polysilicon film in an enclosed chamber during a...
US-5,489,678 Photolabile nucleoside and peptide protecting groups
A synthetic strategy for the creation of large scale chemical diversity. Solid-phase chemistry, photolabile protecting groups, and photolithography are used to...
US-5,487,954 Non-acicular modified high coercivity iron oxides for high density magnetic recording and the processes of...
The non-acicular modified maghemite and magnetite have high coercivity of, for the maghemite, up to 2200 Oe, saturation and residual magnetization of 63-85 emu/g...
US-5,486,112 Autonomous wearable computing device and method of artistic expression using same
Educational devices using process-oriented educational methods are disclosed to prepare pre-school children, school children, and teenagers for keyboarding. The...
US-5,482,608 Capillary electrophoresis flow control system
A system for controlling the bulk flow rate in capillary electrophoresis employs pressure to increase velocity without unacceptably increasing plate height....
US-5,476,924 Protecting group for acetals and methods of using the same in the activation of saccharides
The present invention relates to a method of protecting the hemiacetal or acetal group at the anomeric carbon of a saccharide molecule comprising forming a...
US-RE35,127 Non-halogenated insulation with high oxygen index
The invention features in synergistic combination a new chemistry for fabricating wire and cable insulation and heat-shrinkable tubing and an irradiation process...
US-5,475,800 Color separation in color graphics printing with limited memory
In liquid-ink color graphics printing, true black ink is preferred over composite black wherever possible, but poor print quality results from printing black ink...
US-5,475,461 Photographic processing apparatus
A photographic processing apparatus which incorporates a drum arrangement to form a low volume processing tank. The arrangement comprises a processing tank in...
US-5,475,048 Conductor-filled thermosetting resin
Conductor-filled thermosetting resins having a free radical based cure chemistry are prepared for use as solder paste replacements for electrical conducting...
US-5,470,772 Silicidation method for contactless EPROM related devices
A process for fabricating contactless electrically programmable and electrically erasable memory cells of the flash contactless EPROM or EEPROM type. The array...
US-5,470,693 Method of forming patterned polyimide films
A method of producing patterned polyimide films using wet development of polyimide precursors through a photoresist mask is disclosed. Low thermal coefficient of...
US-5,468,955 Neutral beam apparatus for in-situ production of reactants and kinetic energy transfer
The discovery that a location exists in a plasma sheath surrounding a plasma near a plasma confining surface where recombination of ions and electrons is favored...
US-5,467,883 Active neural network control of wafer attributes in a plasma etch process
The present invention is predicated upon the fact that an emission trace from a plasma glow used in fabricating integrated circuits contains information about...
US-5,466,344 Method and apparatus for controlling water-based liquid waste
A pollution control apparatus (10) for controlling water-based liquid waste includes a vacuum distillation vessel (14) for separating water-based liquid waste...
US-5,465,279 Reactor coolant pump seal test decontamination housing
An arrangement of reactor coolant pump seals arranged in a generally annular stack with a plurality of stacking spacers in a test housing for emplacement in a...
US-5,465,151 Sensors employing interference of electromagnetic waves passing through waveguides having functionalized surfaces
Chemical and biosensors are disclosed. An optical waveguide is used to conduct electromagnetic radiation by total internal reflection in parallel through a...
US-5,464,850 Synergistic preservative systems for chemistry reagents
A family of solutions that can be used to calibrate one or more electrochemical sensors has been developed. These systems can be used to determine analytes in...
US-5,462,064 Integrated system for biological fluid constituent analysis
A multi-part system to collect and analyze constituents of body fluid. The use of a multilayered gel matrix to facilitate the collection of analytes fluid and a...
US-5,457,056 Halohydrocarbon sensing chemistry with base modifier
A base modifier is added to a pyridine/base reagent composition to improve the ability to detect halogenated hydrocarbons like TCE and chloroform. The base...
US-5,455,499 Method and apparatus for indicating a battery status
A battery-status-indicating apparatus and arrangement for use-with electronic equipment (100) provides an operator with a displayed indication of remaining...
US-5,455,009 Blood collection assembly including clot-accelerating plastic insert
A blood collection assembly includes a tube, which may be glass or plastic, and a plastic insert therein. The insert has been plasma-treated to change the...
US-5,451,543 Straight sidewall profile contact opening to underlying interconnect and method for making the same
A method for making a vertical profile contact opening (18) uses an etch stop layer (14), interposed between a conductor layer (10) and a dielectric layer (16),...
US-5,445,911 Chelating positive charge director for liquid electrographic toner
The invention is a positive charge director for liquid electrographic toners. The charge director comprises a very strongly chelating functional group covalently...
US-5,443,080 Integrated system for biological fluid constituent analysis
A multi-part system to collect and analyze constituents of body fluid. The use of a multilayered gel matrix to facilitate the collection of analytes fluid and a...
US-5,441,013 Method for growing continuous diamond films
In contrast to previous approaches, the present inventors have discovered that diamond films can be grown by carbon CVT reactions occurring exclusively in the...
US-5,437,953 Dye-polymer toners for electrophotography
This invention consolidates all of the functions served by the EP toner in one macromolecule. The invention is a macromolecule of dye-polymer comprising a dye...
US-RE35,006 Turfing systems for stadia
Stadia and other activity surfaces are provided comprising natural turf. Natural turf units are provided which are transportable between first and second...
US-5,436,380 Process for producing aromatic hydrocarbons
A process for producing aromatic hydrocarbons comprises bringing hydrocarbons having 2 to 12 carbon atoms into contact with a modified crystalline...
US-5,432,290 Process for the preparation of 2,2-difluoro-1,3-benzodioxole
A process for the preparation of 2,2-difluoro-1,3-benzodioxole from 2,2-dichlorol,3-benzodioxole. 2,2-Difluoro-1,3-benzodioxole is prepared by reaction of...
US-5,431,967 Selective laser sintering using nanocomposite materials
A method of fabricating three-dimensional objects in a layerwise fashion, and having high structural strength and high density, is disclosed. Methods are...
US-5,426,206 Stereospecific synthesis of aldols
Methods are provided for preparing all four diastereomers of 2-alkyl-3-hydroxyalkanals, 2-alkyl-3-silyloxyalkanals, and the like, with high enantiocontrol, using...
US-5,426,148 Fast-curling, high strength, two-part sealants using acetoacetate-amine cure chemistry
A fast-curing sealant composition is made from generally liquid oligomers and has good tensile strength, one hundred percent modulus, Shore-A Hardness, and good...
US-5,422,355 Composition for treating depression with (N-heteroaryl)alkylamines
The invention concerns compounds having formula: ##STR1## or a salt thereof, wherein E represents hydrogen, lower alkyl or a group Ar.sup.1 --A.sup.1 --; Ar...
US-5,421,911 Regular grain oriented electrical steel production process
The present invention provides a steel composition and method for producing a high quality regular grain oriented electrical steel having less than 0.005%...
US-5,420,081 Preparation of fullerene/glass composites
Synthesis of fullerene/glass composites. A direct method for preparing solid solutions of C.sub.60 in silicon dioxide (SiO.sub.2) glass matrices by means of...
US-5,419,872 Tube having regions of different surface chemistry
In a method to modify the chemistry of a portion of the surface of an article, the surface is placed adjacent an electrode in a plasma chamber, the distance to...
US-5,419,821 Process and equipment for reforming and maintaining electroless metal baths
Process and equipment for reforming and maintaining the chemistry of an electroless metal bath, particularly an electroless nickel bath is disclosed.
US-5,414,485 Oscillating drum for an apparatus for processing photographic materials
It is known to oscillate hollow processing drums to increase the agitation of the processing within the drum. However, these drums require a relatively large...
US-5,413,692 Hydrodynamically modulated hull cell
Electrodeposition in surface finishing as well as in electroforming can be performed in a broad range of hydrodynamic conditions. In some instances, such as...
US-5,412,868 Process of removing polymers in semiconductor vias
A method for forming a contact via in an integrated circuit includes the formation of an aluminum conductive element on an integrated circuit device. A conformal...
US-5,412,447 Photographic processing apparatus
It is known to use continuous belts for transporting photographic material through large multi-stranded photographic processing machines so that the material is...
US-5,412,148 Amplifier molecules derived from diethylene triaminepentaacetic acid for enhancement of diagnosis and therapy
Disclosed are amplifier molecules: various organic compounds having branched structures terminating with amine groups to which pharmacologically active groups...
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