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Searching: chemistry





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Patent # Description
US-5,777,149 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-5,777,135 Di-substituted 1,2-dioxetane compounds having increased water solubility and assay compositions
Stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility are provided. Dioxetanes further instituted with two or more...
US-5,776,719 Diagnostic compositions and devices utilizing same
A dry chemistry dye indicator composition provides improved shelf life, stable color indication end point and capability for a system at near normal pH. The...
US-5,776,593 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-5,773,100 PECVD of silicon nitride films
An inlet gas manifold for a vacuum deposition chamber incorporates inlet apertures which increase in diameter or cross-section transverse to the direction of gas...
US-5,772,906 Mechanism for uniform etching by minimizing effects of etch rate loading
A method for etching a layer stack structure on a substrate is provided. The method includes a step of etching the layer stack to a predefined stopping point...
US-5,770,456 Cyclic nucleic acid and polypeptide arrays
A synthetic strategy for the creation of large scale chemical diversity. Solid-phase chemistry, photolabile protecting groups, and photolithography are used to...
US-5,770,265 Environmentally friendly treatments to extend the functional life of wood structures and novel treated wood...
A method to extend the functional life of wood structures by applying fundamental principles of biology and chemistry to control the activity of wood decay...
US-5,767,775 Unanchored sensor and level sensor
A device and method for sensing fluid characteristics, including level, temperature, pH and chemistry, comprises a switch affixed to or embedded in a container...
US-5,766,971 Oxide strip that improves planarity
A process for stripping thin layers of oxide such as sacrificial pad oxide employs etching chemistry that widens cracks to remove shallow cracks and limit the...
US-5,763,599 Nucleoside derivatives with photolabile protective groups
The invention relates to nucleoside derivatives having photolabile protective groups of the general formula (I) ##STR1## in which R.sup.1 .dbd.H, NO.sub.2,...
US-5,762,843 Method of making composite cermet articles
Methods for making, methods for using and articles having cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two regions...
US-5,761,561 Photographic processor and method of operation
A modular photographic processor for processing a photosensitive material. The processor comprising a modular processing section containing at least one...
US-5,759,010 Sealed cartridge to improve chemistry stability of test elements
An improved cartridge and method of dispensing test elements therefrom, which seals off the elements from exposure to the atmosphere. The cartridge includes, at...
US-5,758,643 Method and apparatus for monitoring blood chemistry
An improved system is disclosed for monitoring a patient's blood chemistry, wherein the system intermittently draws blood samples from the patient into a special...
US-5,756,790 Optically active cobalt (II) complexes and method for the preparation of optically active alcohols
The invention provides a method for preparing an optically active alcohol comprising the step of reacting a ketone compound with a hydride reagent in the...
US-5,756,351 Biomolecular optical sensors
The invention provides protein-based sensors which report changes at a cell surface membrane. These sensors comprise an endogenous cell surface protein having a...
US-5,753,788 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-5,753,511 Automated fingerprint methods and chemistry for product authentication and monitoring
Highly efficient, low cost, methods and compounds to determine product authenticity, tampering, manufacturing compliance are provided. The methods and chemicals...
US-5,753,187 Combinatorial chemistry cassette
A cassette is provided which includes a combinatorial chemistry dish as used in chemical and biological laboratory work. The cassette includes a metal housing...
US-5,751,629 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-5,750,463 Thermographic recording films
There is described a novel thermographic recording film, and more specifically, a novel image-forming system incorporated therein which employs both thiolactone...
US-5,747,917 Double-walled mircrowave plasma based applicator
An improved plasma applicator uses a double-walled sapphire sleeve assembly to provide a high efficiency cooling mechanism that is adapted for use with high...
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...
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