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Searching: chemistry





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Patent # Description
US-5,266,670 Selective monohydrosilation of vinyl and ethynyl functional norbornenes and curable products produced thereby
A process comprising the steps of: 1) reacting a norbornene compound of the formula: ##STR1## where R is H or methyl, R.sup.1 is a direct bond or --C(.dbd.O)O--...
US-5,266,199 Serum separating apparatus
This invention relates to an apparatus used in a centrifugal separating step for sample preparation in the field of clinical chemistry. Especially, the invention...
US-5,262,530 Automated system for polynucleotide synthesis and purification
A method and system for polynucleotide synthesis are provided which employ solid phase synthesis on a nonswellable porous polystyrene support by phosphoramidite...
US-5,260,331 Composition for treating depression with (S- or O-heteroaryl)alkyl 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-5,260,221 Sample pad assay initiation device
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-5,260,218 Autoclave corrosion test for zirconium alloys
An improved short-term autoclave (10) test for ex-reactor evaluation of in-reactor corrosion resistance of zirconium alloy members (16) for use in pressurized...
US-5,260,195 Nonaqueous polymeric reagent compositions and applications thereof
Non-aqueous, polymeric reagent film compositions for use with analytical test devices of the dry chemistry type are described. The film compositions are prepared...
US-5,260,101 Multicomponent system for a refinish coating composition and a method for applying the same
A multipackage system for providing a refinish coating composition and a method for applying the same onto a substrate. The method comprises separately...
US-5,258,198 Process for making pepper kraut
The previously stated specification is an indepth description of my invention. This product offers an appeal by its natural color and ingredients. There are...
US-5,257,633 Surface modified blood collection tubes
A glass or plastic article, preferably a blood collection tube, has two or more surface regions of different surface chemistry. One region is substantially...
US-5,257,212 Normalizing analyzer systems to a standard analyzer
There is described a method of calibrating an analyzer in the field, using parameters designed for a "standard" analyzer that may be different from the field...
US-5,254,235 Microelectrode arrays
A microelectrode array for use in electroanalytical chemistry in measuring the electrical characteristics of a solution. A microdisk electrode array is formed by...
US-5,254,142 Whisker reinforced composites for cutting tools with improved performance
The properties of silicon carbide whisker reinforced aluminum oxide, at present used for cutting tools when machining nickel based alloys, are in a very complex...
US-5,252,488 Circular dichroism and spectrophotometric absorption detection methods and apparatus
Spectrophotometric methods, including the use of circular dichroism, spectrophotometric absorption detection fluorescence and derivative spectrophotometric...
US-5,252,427 Positive photoresist compositions
The present invention provides an aqueous-processable, positive-working photoresist composition having improved photospeed and aqueous development rate without...
US-5,252,317 Amplifier molecules for diagnosis and therapy derived from 3,5-bis[1-(3-amino-2,2-bis (aminomethyl)-propyl)...
Disclosed are amplifier molecules: various organic compounds having branched structures terminating with amine groups to which pharmacologically active groups...
US-5,252,212 Spray forming polymer membranes, coatings and films
A method of forming a polymer film having controlled physical and chemical characteristics, wherein a plume of nebulized droplets of a polymer or polymer...
US-5,250,434 Microorganisms for production of glutamic acid
Novel bacteria identified as effective in glutamic acid production through fermentation chemistry conducted at temperatures above 42.degree. C.
US-5,247,023 Hydrocarbon polymers containing borane groups at chain ends or in polymer backbone
Polymeric hydrocarbons having reactive borane groups at chain ends or in the polymer chain are described. These types of polymers can be used as intermediate...
US-5,246,864 Circular dichroism and spectrophotometric absorption detection methods
Spectrophotometric methods, including the use of convention spectroscopic absorption or circular dichroism, for clinical chemistry detection methods. More...
US-5,246,858 Apparatus and method for analyzing a body fluid
A method and apparatus (10) for determining the remission of a chemistry (106) which reacts with a medically significant component of a body fluid. The remission...
US-5,246,666 Additive having dual surface chemistry for blood collection container and assembly containing same
An additive for a blood collection tube has a wettable surface region and a nonwettable surface region. When a blood sample comes into contact with the wettable...
US-5,244,886 11.beta.-phenyl-14.beta.H steroids
New 11.beta.-phenyl-14.beta.H-steroids of general formula (I), where Z is an oxygen atom or the hydroxyimino-grouping N.about.OH, and M and N are either jointly...
US-5,242,538 Reactive ion etch process including hydrogen radicals
The addition of a gaseous source of hydrogen radicals, such as hydrogen, ammonia or methane to oxide RIE etching chemistries, in amounts of from about 5 to about...
US-5,242,522 Photo album page
A method for producing a photo album page composed of superposed panels of transparent polypropylene film joined together by parallel lines of adhesive to define...
US-5,240,654 Method of making ceramic microspheres
A calcined microsphere of ultrafine bauxite particles having a mean particle size in the range 0.01 to 0.3 micrometers, said microsphere having a particle size...
US-5,235,371 Modification of film processor chemistry proportional heating during replenishment
A temperature control system (10) of an automatic film processor (12) includes developer and fixer recirculation paths (30, 40) having thermowell heaters (34,...
US-5,234,838 Ammonia monitor based on ion mobility spectrometry with selective dopant chemistry
An improved ion mobility spectrometer (IMS) and method for operating the same which enables analysis of ammonia in a mixture of gases when air is used as the...
US-5,234,476 Polynitrogen compound having two terminal cycles of the imide type, their preparations and uses
Polynitrogen compound having two terminal cycles of the imide type, its preparation by conventional organic chemistry methods and its use as an additive for...
US-5,232,668 Test strip holding and reading mechanism for a meter
An instrument for analyzing test strips supporting chemistries which react with a medically significant component of a body fluid to indicate the concentration...
US-5,230,785 Method and apparatus for analysis of swimming pool water and analytical cell utilized therein
A swimming pool water analyzer has a housing providing a coulometric titration chamber, a chlorine concentration measuring chamber, a chamber for measuring pH,...
US-5,228,976 Hydrodynamically modulated hull cell
The invention provides, in electroplating quality control methods for manufacturing, better similarity and relevance between a Hull Cell quality control test and...
US-5,227,305 Buffer solution systems for standardizing pH analyzers and electrolytes
A formulation of combined-composition electrolyte and pH buffers for use as standardization solutions in analyzers for clinical chemistry which simultaneously...
US-5,223,492 Derivatives of 19-nor progesterone; process for producing them and the pharmaceutical compositions...
This invention relates to the field of chemistry and more precisely to the field of medicinal Chemistry. It has specifically as subject matter the compounds of...
US-5,223,222 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-5,220,302 NMR clinical chemistry analyzer and method of forming a shield
An NMR clinical chemistry analyzer includes a shield (20) having a plurality of elongate ferromagnetic bars (22) disposed around an NMR magnet (10) and aligned...
US-5,219,485 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-5,214,194 Coupler intermediates and their formation
A process for the preparation of 5-substituted 2-aminophenols via nitrones, comprises two reactions. First, a nitrone is reacted with a trihaloacetyl halide to...
US-5,213,762 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-5,210,007 Image intensification chemistry with blocked incorporated developers
A color photographic element for use with a latent or silver image intensification or amplification method which incorporates a blocked color developing agent....
US-5,206,568 Coordinated control of stepper motors
An automated multi-purpose analytical chemistry processing center and laboratory work station having a movable table for supporting microtiter plates and other...
US-5,206,193 High purity fused grain in the system Al.sub.2 O.sub.3 -Cr.sub.2 O.sub.3 -MGO
High purity fused grain and refractory compositions that contain a high purity fused grain made up of 35 to 85 wt. % chromia, 5 to 55 wt. % alumina, and 5 to 45...
US-5,206,187 Method of processing semiconductor wafers using a contact etch stop
A method of processing a semiconductor wafer comprises: a) fabricating a wafer to define a plurality of conductively doped active regions, the active regions...
US-5,204,269 Sample handling for chemistry analyzers
An automatic chemistry analyzer comprises discrete sample cups about the circumference of a carousel. A motor selectively moves the sample cups towards and away...
US-5,201,229 Sensor for controlling water quality of reactor and method of controlling said water chemistry
An element (e.g., a sensor) has a fine-line thin film of a conductor formed on a non-conductive substrate, and a change of physical properties (e.g., ...
US-5,198,540 Process for the preparation of oligonucleotides in solution
Process for the preparation of oligonucleotides by successive linking of individual or several nucleoside and/or nucleotide units in a homogeneous phase system...
US-5,196,510 Molecular recognition units
A system or method for identifying and/or designing novel peptides and polypeptides comprising an amino acid sequence which mimics the molecular recognition site...
US-5,188,941 Enzymatic determination of theophylline
The present invention provides a new methodology and test composition for determining the presence of theophylline in test samples. The methodology employs...
US-5,187,894 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-5,187,134 Formed, polymeric transition-metal complex catalysts with organosiloxane phenylphosphine ligands
This invention relates to formed, polymeric complexes of metals of the eighth subgroup of the periodic system with ligands of an organosiloxane copolycondensate...
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