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Searching: chemistry





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Patent # Description
US-5,747,342 Methods and apparatus for monitoring and controlling PH phosphate and sodium to phosphate ratio in boiler...
Methods and apparatus for monitoring and controlling pH, phosphate, and sodium to phosphate ratio in boiler systems operating with captive alkalinity chemistry...
US-5,744,515 Method and implantable article for promoting endothelialization
A porous material with an appropriate surface chemistry that promotes capillary endothelialization is disclosed. The material has a porosity that is sufficient...
US-5,744,305 Arrays of materials attached to a substrate
A synthetic strategy for the creation of large scale chemical diversity. Solid-phase chemistry, photolabile protecting groups, and photolithography are used to...
US-5,744,114 Method of preparing dentifrice-compatible silica particulates
Novel silica particulates adopted for formulation into dentifrice compositions have a unique surface chemistry as to be at least 50% compatible with zinc values,...
US-5,744,101 Photolabile nucleoside protecting groups
A synthetic strategy for the creation of large scale chemical diversity. Solid-phase chemistry, photolabile protecting groups, and photolithography are used to...
US-5,741,629 Resist materials and related processes
Polymers suitable for chemically amplified resists based on styrene chemistry are advantageously formed with a meta substituent on the phenyl ring of the styrene...
US-5,741,462 Remotely programmable matrices with memories
Combinations, called matrices with memories, of matrix materials with remotely addressable or remotely programmable recording devices that contain at least one...
US-5,739,052 Apparatus and method for detecting defects in insulative layers of MOS active devices
A technique for quantifying the effect of plasma etching during the formation of MOS transistors avoids the problems of prior techniques. A modified MOS...
US-5,737,496 Active neural network control of wafer attributes in a plasma etch process
The present invention is predicated upon the fact that an emission trace from a plasma glow used in fabricating integrated circuits contains information about...
US-5,737,457 Chip level waveguide sensor
Waveguide sensors are formed on a chip package which contains at least one source and at least one detector. Simple waveguide elements are mounted on the chip....
US-5,736,120 Method for preparing radiolabeled peptides
A method for radiolabelling peptides using polyaminocarboxylate ligands having suitable protecting groups such that they can be added to peptides by standard...
US-5,734,024 Method for determining the biological activity of recombinant human growth hormone
A method is provided for determination of the biological activity, purity and/or homogeneity of recombinant human growth hormone ("rhGH") using an analytical...
US-5,730,938 Chemistry analyzer
A carousel receives a plurality of removable reagent containers, a turntable receives a plurality of sample fluid containers and a rotatable cuvette assembly...
US-5,728,197 Reclamation process for tungsten carbide/cobalt using acid digestion
Tungsten carbide cobalt and tungsten-containing materials are recycled using a single high-temperature oxidation with standard dilution chemistry. The scrap...
US-5,726,100 Method of forming contact vias and interconnect channels in a dielectric layer stack with a single mask
A process is disclosed for forming interconnect channels and contact vias using a single mask. The interconnect channels are formed in an upper silicon dioxide...
US-5,726,085 Method of fabricating a dynamic random access memory (DRAM) cell capacitor using hemispherical grain (HSG)...
A storage node 64 of a capacitor having increased charge storage capacity and a method for forming thereof. A doped polysilicon region 68 is formed. A thin layer...
US-5,724,254 Apparatus and method for analyzing power plant water chemistry
A power plant water chemistry analysis apparatus and method relies upon water chemistry sensors to obtain power plant water chemistry data characterizing the...
US-5,721,370 Water soluble tri-substituted 1,2-dioxetane compounds and assay compositions having increased storage stability
Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility and storage stability are provided. Dioxetanes further substituted...
US-5,721,099 Complex combinatorial chemical libraries encoded with tags
Encoded combinatorial chemistry is provided, where sequential synthetic schemes are recorded using organic molecules, which define choice of reactant, and stage,...
US-5,719,911 System for monitoring noble metal distribution in reactor circuit during plant application
A system for ensuring the distribution of noble metal in the reactor circuit during plant application without measuring the reactor water for noble metal content...
US-5,719,060 Method and apparatus for desorption and ionization of analytes
This invention relates generally to methods and apparatus for desorption and ionization of analytes for the purpose of subsequent scientific analysis by such...
US-5,717,083 Phosphoramidate and phosphorothiomidate oligomeric compounds
Compounds are provided having structure (I), wherein the L groups are backbone segments, the Y and T groups are functional groups for interacting with target...
US-5,717,039 Functionalization of polymers based on Koch chemistry and derivatives thereof
A Koch functionalized product which is the reaction product of at least one polymer having a number average molecular weight of at least 500 and at least...
US-5,714,563 One-part, low viscosity, moisture curable composition
A one-part, low viscosity, moisture curable composition which exhibits excellent shelf stability in the absence of water, but which quickly cures at ambient...
US-5,714,126 Respirator filter system
The present invention provides a respirator filter system suitable for filtering toxic agents, including organic vapors, acid gases, formaldehyde, ammonia, and...
US-5,714,086 Propargyl ether-containing compositions useful for underfill applications
In accordance with the present invention, there are provided novel propargyl ether-based compositions that are very effective when used in underfill...
US-5,713,348 Endotracheal tube connector and method for optimizing the breathing ability of an intubated patient
A method for optimizing the breathing ability of an intubated patient is based on an evaluation of the expirational flow characteristics of an endotracheal tube...
US-5,712,263 Steroid derivatives
To provide novel steroid derivatives having an antitumor action which can be synthesized efficiently and stereoselectively by means of synthetic organic...
US-5,710,259 Oligosaccharide-containing 14-aminosteroid compounds and novel diastereoselective aminosteroid process chemistry
The present invention relates to oligosaccharide-containing 14-aminosteroid compounds and the pharmaceutically-acceptable acid salts or esters thereof of the...
US-5,710,247 Process and intermediates for the synthesis of LHRH antagonists
A method is provided for preparing decapeptide and undecapeptide derivatives of LHRH by solution phase peptide chemistry as well as intermediate peptides useful...
US-5,710,246 Process for intermediates for the synthesis of LHRH antagonists
A method is provided for preparing decapeptide and undecapeptide derivatives of LHRH by solution phase peptide chemistry as well as intermediate peptides useful...
US-5,708,000 N4-substituted cytosinyl 1,3-oxathiolane nucleoside analogues, and their antiviral activity
The present invention pertains to the field of organic chemistry, and particularly therapeutic chemistry. The invention provides cis-form 5-(cytosinyl-1)...
US-5,705,507 Aplha-substituted-3-benzyl-benzofurans
This invention relates to the fields of pharmaceutical and organic chemistry and provides novel 3-benzyl-benzofurans which are .alpha.-substituted with ether,...
US-5,705,428 Method for preventing titanium lifting during and after metal etching
A process for forming metal composites, using a titanium underlay as part of the composite, with reduced risk of titanium adhesion loss or lifting, has been...
US-5,703,256 Functionalization of polymers based on Koch chemistry and derivatives thereof
A Koch functionalized product which is the reaction product of at least one polymer having a number average molecular weight of at least 500 and at least...
US-5,700,726 Multi-layered tungsten depositions for contact hole filling
A process for filling small diameter contact holes, with tungsten, has been developed. This process consists of using two consecutive tungsten depositions. A...
US-5,699,157 Fourier detection of species migrating in a microchannel
The present invention provides a microfluidic system for fast, accurate and low cost electrophoretic analysis of materials in the fields of chemistry, ...
US-5,698,722 Functionalization of polymers based on Koch chemistry and derivatives thereof
A Koch functionalized product which is the reaction product of at least one polymer having a number average molecular weight of at least 500 and at least...
US-5,697,046 Composite cermet articles and method of making
Methods for making, methods for using and articles comprising ferromagnetic cermets, preferably cemented carbides and more preferably tungsten carbide, having at...
US-5,697,042 Composite cermet articles and method of making
Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two...
US-5,696,064 Functionalization of polymers based on Koch chemistry and derivatives thereof
A Koch functionalized product which is the reaction product of at least one polymer having a number average molecular weight of at least 500 and at least one...
US-5,691,486 Apparatus and methods for selecting a variable number of test sample aliquots to mix with respective reagents
A method and apparatus for selecting a subset of a predetermined number of test sample aliquots to mix with respective reagents using a shear valve having a...
US-5,691,465 Multi-plate thin film carbon monoxide sensor
A gas detector, preferably for carbon monoxide detection, which includes a light detector(5), a light source (1) for providing a light beam which travels along a...
US-5,686,244 Method for detecting a nucleic acid analyte using an improved electrochemiluminescent label
This invention relates to a new electrochemiluminescent (ECL) label for oligonucleotides using phosphoramidite chemistry.
US-5,686,119 Composite cermet articles and method of making
Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two...
US-5,684,387 Voltage cutoff compensation method for a battery in a charger
A battery charging system (300) is capable of maintaining a fully charged battery (304) without overcharging or undercharging the battery regardless of the...
US-5,681,977 Method for the production of (3-alkoxycarbonyl-2-butenyl) triphenylphosphonium salts
Novel processes and intermediates useful for the manufacture of the Wittig ester salts are disclosed. The Wittig ester salts are known as important C.sub.5...
US-5,679,445 Composite cermet articles and method of making
Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two...
US-5,677,231 Method for providing trench isolation
A trench isolation region (32) is fabricated to include a trench liner (28) comprised of aluminum nitride. The aluminum nitride trench liner is useful in...
US-5,677,133 Dry chemistry cascade immunoassay and affinity assay
A method is described for performing an affinity assay comprising contacting a sample to be assayed for the presence of an analyte with a dry reagent containing...
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