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Searching: chemistry





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Patent # Description
US-5,138,450 High density character and/or figure displaying apparatus
A display apparatus capable of displaying, by use of an ordinary television set function, character/figure information having a higher display density than...
US-5,138,066 Intermediates for cephalosporins with sulfur-containing oxyimino side chain
Antibacterial compounds of the formula ##STR1## wherein R is a mononuclear carbocyclic aromatic group, a 5-membered aromatic heterocyclic group which...
US-5,135,737 Amplifier molecules 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...
US-5,135,716 Direct measurement of HDL cholesterol via dry chemistry strips
A device for determining HDL cholesterol by obtaining plasma from whole blood and determining the HDL cholesterol level from the plasma. The device includes an...
US-5,133,908 Process for the preparation of dispersible colloidal systems of a substance in the form of nanoparticles
The Process according to the invention comprises: (1) the preparation of a liquid phase consisting essentially of a solution of the substance in a solvent or in a...
US-5,132,345 Ion-selective electrodes
An ion-selective polymeric membrane for an electrochemical sensor for use in analytical chemistry, comprising a) a supporting matrix e.g. of PVC, and b) an ionophore...
US-5,132,248 Direct write with microelectronic circuit fabrication
In a process for deposition of material onto a substrate, for example, the deposition of metals or dielectrics onto a semiconductor laser, the material is...
US-5,132,230 Primary standard and method of making secondary standards for calibration of glycated protein assays
This invention provides a primary standard and/or secondary standards for assay for glycated proteins in samples such as blood. The primary standard is composed...
US-5,132,075 Method and apparatus for water chemistry diagnosis of atomic power plant
Measurement values of conductivity of pH of water in the primary cooling water system of a boiling water atomic power plant are input through on-line and the...
US-5,130,095 Automatic chemistry analyzer
An automatic chemistry analyzer includes a flow cell mounted so that flow through the cell and tubing connected to the cell is visible from the front of the...
US-5,130,010 Salt bridge for analytical chemistry system
A salt bridge for a flow cell which includes a porous bridge element between fluid flow in the flow cell and in an internal reference fluid flow. The bridge...
US-5,128,103 Apparatus for automatically processing magnetic solid phase reagents
An automatic chemistry system having a wheel for mounting reaction vessels is provided with a programmable permanent magnet which is selectively positioned...
US-5,125,748 Optical detection module for use in an automated laboratory work station
An automated multi-purpose analytical chemistry processing center and laboratory work station having a movable table for supporting microtiter plates and other...
US-5,118,383 Method for producing trench structures in silicon substrates for VLSI semiconductor circuits
A method is provided for producing trench structures having vertical, smooth side walls and straight, flat trench floors in silicon substrates. The reactive ion...
US-5,114,926 Tetrapeptide inhibiting the entry into cycle of hemopoietic stem cells processes for its preparation, and its uses
The invention relates to a tetrapeptide corresponding to the general formula and its substitution derivatives by one or several groups, identical or different,...
US-5,114,805 High temperature molten salt electrochemical cell
A high temperature molten salt electrochemical cell including an electrode tack assembly sealed in a containment vessel is provided for use in testing ...
US-5,114,545 Electrolyte chemistry for improved performance in modern industrial alumina reduction cells
A composition and method is disclosed for the production of aluminum. A modified cryolite electrolyte bath is shown comprising, by weight: 0.5 to 1.5% LiF; 0 to...
US-5,112,435 Materials and methods for etching silicides, polycrystalline silicon and polycides
Gas chemistry and a related RIE mode process is described for etching silicides of the refractory metals titanium, tantalum, tungsten and aluminum and for...
US-5,108,703 Automated multi-purpose analytical chemistry processing center and laboratory work station
An automated multi-purpose analytical chemistry processing center and laboratory work station having a movable table for supporting microtiter plates and other...
US-5,106,467 Alkaline leaching of galvanized steel scrap
Caustic dezincing galvanized steel scrap. A dezincing plant includes a plurality of tanks interconnected in series with steel scrap sequentially being moved...
US-5,104,942 Preparation of side-chain polymers
A method for adding ester side groups, e.g. liquid crystalline groups, to a polymer backbone using tin chemistry. ##STR1## The method is particularly useful...
US-5,104,684 Ion beam induced deposition of metals
Metal is deposited in lines of submicron width by scanning a focused ion beam along a substrate in the presence a vapor of a precursor platinum compound. High...
US-5,104,621 Automated multi-purpose analytical chemistry processing center and laboratory work station
An automated multi-purpose analytical chemistry processing center and laboratory work station having a movable table for supporting microtiter plates and other...
US-5,100,805 Quantitative immunoassay system and method for agglutination assays
An improved, copolymer-based immunoassay system, method, and apparatus is highly sensitive and effective in accurately measuring extremely low concentrations,...
US-5,097,014 Chromogenic tripeptides
Compounds of the formula I ##STR1## in which X denotes a hydrogen atom, a group which irreversibly masks the terminal amino group, or a protecting group...
US-5,095,206 Method and apparatus for improving the specificity of an ion mobility spectrometer utillizing sulfur dioxide...
An improved ion mobility spectrometer (IMS) and method for operating the same which enables analysis of a specific acid gas analyte in a mixture of such gases...
US-5,094,688 Triarylmethane color-forming agents
Color-forming agents of the present formula ##STR1## wherein X denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy, cycloalkoxy, aryloxy, acyloxy, alkylamino,...
US-5,093,477 Rapidly cleavable substrate for HIV protease
A rapidly cleavable substrate for HIV protease Hepta- to nona-peptides of the formula in which A is absent or represents Val, Ile or Thr, B denotes Ser, Thr or ...
US-5,088,690 Electrode holder for immersion-type, flow-type and attachment-type measuring systems in analytical chemistry
In connection with an electrode holder for immersion-type flow-type and attachment-type measuring systems in analytical chemistry, in particular for pH,...
US-5,087,719 Dehydrogenative polymerization of silanes to polysilanes by catalysts of transition-metal silyl derivatives
A mechanism for the dehydrogenative polymerization of silanes to polysilanes is proposed, based on studies with zirconocene and hafnocene catalysts. This is a...
US-5,086,073 Composition for treating depression with aralkyl amines
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-5,085,725 Method of chemical bonding of solid propellant grains to the internal insulation of an interceptor motor
The trimer of 1,6-hexanediisocyanate, which has the chemical name in acconce with (International Union of Pure and Applied Chemistry) (IUPAC) nomenclature of ...
US-5,080,455 Ion beam sputter processing
Surface treatment of a substrate by ion beam sputtering (IBS). The sputtered material impacts on the substrate with a kinetic energy which may be several orders...
US-5,079,146 Method of protection of the carboxy groups in the chemistry of .beta.-lactam compounds
The present invention relates to a new method of protection of the carboxy group in the chemistry of the compounds of .beta.-lactam type. According to such a...
US-5,073,963 Computerized method of matching two-dimensional (2-D) patterns
This invention teaches a computerized method for use in data acquisition and manipulation of two-dimensional patterns in the fields of medicine, astronomy,...
US-5,073,550 Cephalosphorins with sulfur-containing oxyimino side chain
Antibacterial compounds of the formula ##STR1## wherein R is a mononuclear carbocyclic aromatic group, a 5-membered aromatic heterocyclic group which...
US-5,073,499 Chemical diagnostic system
A chemical monitor system is disclosed that controls a multiplexable valve array 90 to route a fluid sample from any of plural fluid sample sources 20-38 to any...
US-5,072,743 Barrierized cigarette
Differentiation of surface is utilized for the prevention or arrest of forward finger edge slippage along the surface of a cigarette under new perception and...
US-5,071,836 Competitive gonadoliberin antagonists
Peptides of the formula in which X represents Tyr or His and Y represents Gly-NH.sub.2, D-Ala-NH.sub.2, Azgly-NH.sub.2 or NH--C.sub.2 H.sub.5 are competitive ...
US-5,069,779 Water treatment system
A water treatment system including a plurality of treatment tanks containing a water treatment material and defining a fluid flow path through the material...
US-5,066,797 Process for preparing cepham intermediates
There is described a process for producing exomethylene cepham intermediates useful in cephalosporin chemistry. The process comprises the preparation of a...
US-5,066,324 Method of evaluation and identification for the design of effective inoculation agents
The Droplet Emulsion Technique is used to produce droplets of bulk metal or metal alloys containing inoculant particles. Heterogeneous nucleation responses are...
US-5,063,266 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-5,059,387 Method of forming shaped components from mixtures of thermosetting binders and powders having a desired chemistry
Shaped parts are formed from a powder having the desired chemistry of the finished part by mixing the powder with a thermosetting condensation resin that acts as...
US-5,059,260 Composite rocket propellant composition with a controllable pressure exponent
Gem-difluoroamino compounds are employed as a partial or complete replacement for TVOPA (trisvinoxypropyl adduct), ...
US-5,055,562 Fluorocarbon chain-containing antigenic conjugates
Fluorocarbon chain-containing linking arms can be used to conjugate haptens to protein carriers such as BSA, HSA, or antibodies without recourse to harsh...
US-5,053,528 Novel dihydroxy compounds with ester groups and preparation thereof
Ester group-containing dihydroxy compounds of reduced reactivity for use in polyurethane chemistry have the formula I ##STR1## where R is linear or branched...
US-D320,443 Clinical chemistry analyzer
US-5,047,524 Automated system for polynucleotide synthesis and purification
A method and system for polynucleotide synthesis and purification are provided which employ solid phase synthesis on a nonswellable porous polystyrene support by...
US-5,041,362 Dry developable resist etch chemistry
A photoresist layer (16) is selectively exposed to ultraviolet radiation (22). The exposed regions (23) are silylated with a silicon-liberating compound such as...
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