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Searching: chemistry





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Patent # Description
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...
US-5,037,492 Alloying low-level additives into hot-worked Nd-Fe-B magnets
Diffusion alloying techniques are used to introduce low level additives into hot-worked Nd-Fe-B magnets. The powdered metal is added to the rapidly solidifed...
US-5,036,064 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-5,035,768 Novel etch back process for tungsten contact/via filling
An etchback process for etching a refractory metal layer formed on a semiconductor substrate with a greatly reduced micro-loading effect. The etch proceeds in...
US-5,033,939 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-5,026,884 Reductive coupling of carbon compounds via transition metal complexes
The present invention is directed to a process for the formation of an isolable C.sub.2 containing compound formed by reductive coupling chemistry, and...
US-5,021,568 Lactam-1-acetic acid carbalkoxymethyl esters and method for preparing same
The present invention relates to organic chemistry. Lactam-1-acetic acid carbalkoxymethyl esters have the following general formula: ##STR1## wherein with...
US-5,019,348 Automated chemical conversion unit in a peptide/protein sequenator
An automated chemical conversion unit for use in a peptide/protein sequencing process. The improved conversion methodology decreases the time necessary for the...
US-5,017,856 Battery charging system
A battery charging system including a battery of one chemistry type and a battery charger for a different battery type is disclosed. If a battery over-discharge...
US-5,017,611 Ethyl-3-(2-ethyl-2,2-dimethylhydrazinium)-propionate salts to treat arrhythmia
The present invention relates to the art of organic chemistry. The novel compounds - ethyl-3-(2-ethyl-2,2-dimethylhydrazinium)-propionate salts have the general...
US-5,013,648 Enzymatic detection of monovalent anions
An enzymatic reagent, kit and method for determining the concentration of monovalent anions, especially chloride, particularly in clinical samples, and...
US-5,013,398 Anisotropic etch method for a sandwich structure
A plasma etch process to anisotropically etch a sandwich structure of silicon dioxide, polycrystalline silicon, and silicon dioxide "in situ", that is, in a...
US-5,011,663 Multitest-tube for clinical chemistry analysis for several simultaneous tests
A test-tube for clinical chemistry analysis made up of a plurality of cells, each one of the cells comprising a lower portion for the collection of the reagent...
US-4,996,146 Rapid sterilization enzymatic process with persistence
An enzymatic sterilization system is disclosed which is effective against viruses and other organisms. Methods are disclosed to increase the rate of and reduce...
US-4,993,323 Fluidized bed combustion of aluminum smelting waste
An environmentally acceptable and effective method for thermal destruction of Spent Potliner (SPL) by Fluidized Bed Combustion (FBC) has been established. This...
US-4,988,805 Naphtholazophenylazoaminonaphthol compounds and copper complexes thereof
The dyestuffs of the general formulae ##STR1## and salts thereof wherein X denotes hydrogen, alkoxy or NHR.sub.3, R denotes hydrogen, alkyl or alkoxy, R.sub.1...
US-4,988,683 New pharmaceutical compositions for the buccal tract and process for their preparation
This invention relates to the field of pharmaceutical chemistry and more precisely to the field of galenical pharmacy. It refers to new pharmaceutical compositions...
US-4,988,625 Method for determining the functionalization of a solid support
A solid support chemistry system which, with a dinitrofluorobenzene based assay, can be used to define titers of ligands and chemistry distal to the support....
US-4,988,416 Process for the electrosynthesis of aldehydes
The process for the electrosynthesis of an aldehyde, according to the invention, is carried out by electrolysis, in a cell comprising only a single compartment,...
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