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Searching: chemistry





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Patent # Description
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,...
US-4,985,320 Processor chemistry control strip reader and replenishment system
A voltage set point system is employed to provide a constant illumination of a photographic test strip. The set voltage is used as the supply for a voltage...
US-4,980,018 Plasma etching process for refractory metal vias
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-4,978,649 Porous carbonaceous material
The present invention relates to physical chemistry. The material is made as a three-dimensional matrix with a pore volume of from 0.2 to 1.7 cm.sup.3 /g. The matrix...
US-RE33,464 Method and apparatus for flame generation and utilization of the combustion products for heating, melting and...
Method and apparatus for high temperature heating, melting, refining and superheating of materials, such a steel scrap, metals, ceramics or glass. The invention...
US-4,968,797 Chromogenic 4,4-diaryldihydroquinazolones
4,4-diaryldihydroquinazolones of the formula ##STR1## wherein X.sup.1, X.sup.2 and X.sup.3, independently of one another, denote hydrogen, halogen, alkyl,...
US-4,967,763 Platelet stable blood collection assembly
A blood collection assembly includes a plasma-treated blood collection container and a blood collector which optionally may also be plasma-treated. The collector...
US-4,961,915 Automatic chemistry machine
An automatic chemistry machine particularly suitable for the automatic sequencing of DNA on the microliter scale including a source of reagents, a common means...
US-4,961,778 Densification of ceramic-metal composites
Substantially dense, void-free ceramic-metal composites are prepared from components characterized by chemical incompatibility and non-wetting behavior. The...
US-4,960,488 Reactor chamber self-cleaning process
A process for cleaning a reactor chamber both locally adjacent the RF electrodes and also throughout the chamber and the exhaust system to the including...
US-4,959,324 Sample pad assay initiation device and method of making
A self-contained assay device is provided, where an analyte may be detected or be quantitated by measuring the distance of a detectable signal from a ...
US-4,958,767 Process and device for injecting a matter in fluid form into a hot gaseous flow and apparatus carrying out this...
This invention relates to a process and device for injecting at least one stream of a fluid matter into a hot gaseous flow, such as a plasma jet. According to...
US-4,956,409 Binder chemistry
A glass wool binder is made to include a surfactant decomposable upon heating so as to produce a hydrophobic surface on the wool after curing of the binder.
US-4,954,648 Method for the bromination of aromatic compound
A method for the bromination of aromatic compounds, including substituted deactivated aromatic compounds, at mild temperature conditions is disclosed. The method...
US-4,954,451 Agent for diminishing ascorbate interference in reagent systems and method relating thereto
The present invention is directed to an agent and method for eliminating ascorbate interference in reagent systems, particularly assay systems using...
US-4,952,300 Multiparameter analytical electrode structure and method of measurement
An ion sensitive electrode device and method of its use in analytical and clinical chemistry are provided for measuring the concentration of an ionizable analyte...
US-4,946,665 Reactive zirconium oxide and its preparation
The invention relates to the chemistry of zirconium. It relates particularly to a reactive zirconium oxide in the form of fine particles whose median diameter does...
US-4,944,923 Autoclave for the pressure digestion of sample materials in analytical chemistry
An autoclave useful for pressure digestion of samples for chemical analysis, consisting of a closeable vessel containing the sample, which during operation...
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