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Searching: chemistry
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| Patent # | Description |
|---|---|
| US-4,680,086 |
Dry etching of multi-layer structures A method for etching multi-layer structures particularly suited for patterning refractory metal silicide/polysilicon sandwiches. A first dry etch process is... |
| US-4,678,754 |
Liquid clinical control standard, and reagent products This invention relates to the field of clinical controls useful for calibrating clinical chemistry analyzers and in manual testing methods, as well as clinical... |
| US-4,678,331 |
Multicuvette rotor assembly An improved analytical cuvette rotor assembly for use in a centrifugal chemistry analyzer comprising a disc-shaped body having a plurality of radially extending... |
| US-D290,650 |
Probe for aspirating and dispensing sample fluid in a clinical chemistry
analyzer |
| US-4,670,551 |
Epoxy steroids 7.alpha.-acylthio-9.alpha.,11.alpha.-epoxy-20-spirox-4-ene-3,21-diones of the formula I ##STR1## in which R represents lower alkanoyl and --A--A--... |
| US-4,669,878 |
Automatic monochromator-testing system An automated chemistry-testing system for analyzing serum samples in which a controlled intensity, monochromatic light beam of substantially any desired... |
| US-4,665,016 |
Chromogenic compounds, a process for their preparation and their use Chromogenic compounds of the formula I ##STR1## and a process for their preparation are described, X denoting a hydrogen atom, a protective group... |
| US-4,659,426 |
Plasma etching of refractory metals and their silicides Refractory metals, refractory metal silicide, and polysilicon/refractory metal silicide sandwich structures integrated circuits are etched using carbonyl... |
| US-4,654,127 |
Self-calibrating single-use sensing device for clinical chemistry and
method of use A single-use sensing device for a clinical chemistry analyzer system includes a carrier which supports a capillary passage. Species selective sensors are located... |
| US-4,654,112 |
Oxide etch A new process for plasma etching silicon oxides in integrated circuit structures. A chemistry comprising both oxygen and nitrogen trifluoride is used, with... |
| US-4,652,130 |
Method of and arrangement for an interferometer In the inventive interferometers, based on the principle of Michelson, an teration of pathlength is obtained through rotation of a movable mirror, where this... |
| US-4,650,867 |
Process for the preparation of 2,4,6-tris(aminophenylamino)triazines A process for the preparation of 2,4,6-tris(aminophenylamino)triazines by condensing s-trichlorotriazine with 3 equivalents of a partially protected ... |
| US-4,645,861 |
3-sulfonylamino-4-amino phenyl acyl derivatives A 4-acyl-o-phenylenediamine is selectively sulfonated on the amino group meta to the acyl group to provide an important intermediate for benzimidazole... |
| US-D288,478 |
Clinical chemistry analyzer |
| US-4,643,976 |
Liquid clinical control, standard, and reagent products This invention relates to the field of clinical controls useful for calibrating clinical chemistry analyzers and in manual testing methods, as well as clinical... |
| US-4,642,047 |
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-4,640,919 |
3-substituted carbacepem compounds having antibacterial effect Carbacephem compounds represented by the formula: ##STR1## [wherein R.sub.1 is a lower alkylsulfonyloxy, unsubstituted or substituted arylsulfonyloxy,... |
| US-4,637,403 |
Glucose medical monitoring system Hand-held shirt-pocket portable medical diagnostic system for checking measurement of blood glucose, urea nitrogen, hemoglobin, blood components or other body... |
| US-4,627,445 |
Glucose medical monitoring system Hand-held shirt-pocket portable medical diagnostic system for checking measurement of blood glucose, urea nitrogen, hemoglobin, blood components or other body... |
| US-4,622,007 |
Variable heat generating method and apparatus Method and apparatus for high temperature heating, melting, refining and superheating of materials, such as steel scrap, metals, ceramics or glass. The invention... |
| US-4,621,072 |
Process for preparing abrasion-resistant coated catalysts A process is disclosed for preparing coated catalysts, inter alia, for gas phase oxidations in organic chemistry, comprised of an inert support and a coating of... |
| US-4,619,749 |
System for extracting silver from liquid solutions Ionic silver is extracted from photographic fixing solutions by electrolytic plating on a removably fixed cathode plate of an electrode assembly connected in... |
| US-4,616,779 |
Process and device for injecting a finely divided material into a hot
gaseous flow and apparatus for carrying... The invention relates to a process and device for injecting at least one stream of a finely divided material into a hot gaseous flow, such as a plasma jet.... |
| US-4,615,866 |
Fluid-sampling system and method Fluid-sampling system and method for automated, chemistry-analyzing apparatus for withdrawing precise quantities of serum samples from a specimen container and... |
| US-4,615,511 |
Continuous steelmaking and casting In a continuous steelmaking method, a molten metal bath is maintained within a rotary furnace heated by oxy-fuel burners at the charge and discharge ends.... |
| US-4,609,541 |
Method of processing coal gas An improved method for the recovery of elemental sulfur(S) from a coal-gas containing hydrogen sulfide (H.sub.2 S) wherein hot lime (CaO) is used and then... |
| US-4,609,400 |
Method and apparatus for preheating charge materials for continuous
steelmaking A method and apparatus for the continuous preheating of charge materials for an electric steelmaking furnace operation including provision for preheating with... |
| US-4,607,028 |
Novel carboxylic acid esters Novel 17.beta.-methoxycarbonyl derivatives of the androstane series of the formula ##STR1## in which R represents alkyl having from 1 to 4 carbon atoms are ... |
| US-4,606,227 |
Apparatus and method for simulating diagenesis An apparatus and method for simulating diagenetic models, comprising passing a fluid from a fluid supply vessel sequentially through two rock sample containment... |
| US-4,604,460 |
1-oxadethiacepham compounds Intermediates for preparaing an antibacterial 1-dethia-1-oxacephalosporins which are represented by the following formula: ##STR1## wherein R is a... |
| US-4,603,120 |
Cyclic octapeptides and pharmaceutical preparations thereof, as well as
processes for their manufacture, and... Cyclic octapeptides of the formula ##STR1## in which Aaa represents a radical of a straight-chained .alpha.,.omega.-diaminoalkanoic acid having from 4 to 7... |
| US-4,602,483 |
Coal slurry system A slurry of liquified gas such as carbon dioxide and finely pulverized coal particles is provided in a mixing chamber and discharged from the chamber into a... |
| US-4,600,427 |
Method of ladle steelmaking and product produced thereby A method of refining steel in the ladle using a low melting point slag is disclosed. Both ELS and resulfurized steels are subjected to the simultaneous effect of... |
| US-4,598,049 |
General purpose gene synthesizer A microprocessor controlled, general purpose gene synthesizer for programmably synthesizing selected nucleotide sequences. Depending upon a programmed chemistry,... |
| US-4,593,093 |
Acyl derivatives There are presented compounds of the formula ##STR1## wherein R.sup.1 is one of the 3-substituents usable in cephalosporin chemistry, R.sup.2 is hydrogen,... |
| US-4,593,018 |
Oligopeptide aldehydes useful as specific inhibitors of enterokinase Compounds of the general formula: ##STR1## wherein n is an integer from 2 to 6, m is an integer from 2 to 4, p is an integer from 1 to 3, R is H, an amino... |
| US-4,588,810 |
Basic triphendioxazine dyestuffs Basic triphendioxazine dyestuffs of the formula ##STR1## wherein R.sub.1 and R.sub.2, independently of each other, each denote hydrogen, halogen, alkyl,... |
| US-4,585,646 |
Obtaining silicon compounds by radiation chemistry Irradiation of a siloxane derives SiO at low temperatures and forms the basis for a closed cycle reforming the siloxane that decomposes water to produce H.sub.2... |
| US-4,584,022 |
Cement plant dust recovery system A process of treating the dust catch from a cement manufacturing operation to produce either cement clinker or an intermediate product suitable for feed to a... |
| US-4,581,123 |
Custom blended precursor for carbon artifact manufacture This invention is based upon a new concept in carbon artifact manufacture, wherein a precursor can be manufactured by blending extracted components of at least... |
| US-4,573,968 |
Infusion and blood chemistry monitoring system A patient infusion and blood chemistry monitoring system is provided for controlled fluid infusion with intermittent interruption for automated drawing of a... |
| US-4,568,742 |
Basic triphendioxazine dyestuffs Basic triphendioxazine dyestuffs of the formula ##STR1## wherein Q denotes the radical ##STR2## or hydrogen, R.sub.1 and R.sub.2, independently of... |
| US-4,564,388 |
Method for continuous steelmaking A method for the continuous operation of an electric steelmaking furnace, including preheating charge materials, charging and tapping while maintaining full... |
| US-4,563,537 |
Synthesis of thiophene-containing prostaglandin endoperoxide apparatus New organopalladium reactions involving the addition of thienylpalladium compounds to strained bicyclic alkenes, and subsequent chain extension reactions... |
| US-4,551,428 |
Agent for the determination of esterolytic and/or proteolytic enzymes Esters and agents including the esters, useful as substrates for esterolytic and/or proteolytic enzymes, said esters being compounds of the general formula: ... |
| US-4,551,175 |
Method for controlling slag chemistry in a refining vessel Method for slag chemistry control in a refractory lined vessel during the process of refining metal by the injection of oxygen gas during a period of oxidation... |
| US-4,543,124 |
Apparatus for continuous steelmaking Apparatus for the continuous making of steel in an electric steelmaking furnace, having a charge material preheater, continuous charging means, and means for... |
| US-4,539,409 |
Process for preparing aromatic nitriles A process is disclosed for preparing coated catalysts, inter alia, for gas phase oxidations in organic chemistry, comprised of an inert support and a coating of... |
| US-4,535,786 |
Measurement of body fluid chemistry A method and apparatus are disclosed in which body fluid chemistry is measured in either differential or nondifferential mode using apparatus of the kind... |
| US-D280,131 |
Case for a multiplicity of liquid sample containers for a multitest
chemistry analyzer |
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