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Searching: chemistry





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Patent # Description
US-5,656,241 Method for manufacturing fiber optic sensors
A method is provided-for manufacturing a fiber optic sensor for detecting or measuring a parameter of interest in a sample fluid, including pH, concentration of...
US-5,656,102 Bake hardenable vanadium containing steel and method thereof
Rolled articles such as hot rolled or cold rolled and annealed sheet and/or strip include effective amounts of vanadium in low carbon steels to produce an...
US-5,653,894 Active neural network determination of endpoint in a plasma etch process
The present invention is predicated upon the fact that a process signature from a plasma process used in fabricating integrated circuits contains information...
US-5,653,824 Magnetic strips and methods for making the same
Methods for preparing magnetic strips are provided in which the strips are manufactured to a thickness of less than about 0.005 inches and are made of a ferrous...
US-5,652,176 Method for providing trench isolation and borderless contact
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-5,652,170 Method for etching sloped contact openings in polysilicon
Disclosed is a vertically oriented capacitor structure, which is of particular usefulness in MOS DRAM memory modules. The structure has upper and lower...
US-5,648,537 Process for the synthesis of substituted carbodiimides
The invention relates to a new process for the synthesis of a disubstituted carbodiimide, including a first stage of phosgenation of an N,N'-disubstituted urea...
US-5,648,201 Efficient chemistry for selective modification and metallization of substrates
A process for efficient modification and metallization of substrates includes the steps of providing a substrate with highly photoefficient chemical functional...
US-5,646,285 Combinatorial non-peptide libraries
The present invention relates to an orthogonally-protected compound of the formula: ##STR1## wherein PG.sub.1 is a first protecting group that is unreactive...
US-5,644,153 Method for etching nitride features in integrated circuit construction
A process for etching nitride layers in three steps is disclosed. The process comprises selecting a process chemistry of CF.sub.4 to CHF.sub.3 to set a...
US-5,643,989 Fiber reinforced functionalized polyolefin composites
A composite material consisting of continuous random glass mats with a new non-peroxide sizing chemistry, polypropylene and a functionalized polypropylene. This...
US-5,643,884 Lupane triterpenoid derivatives
This invention relates generally to the field of medicinal chemistry, and more specifically to derivatives of a subclass of triterpenoid acids that have...
US-5,643,631 Ink jet recording paper incorporating novel precipitated calcium carbonate pigment
An improved thermal ink jet recording paper, incorporating heat aged precipitated calcium carbonate ("PCC") and a binder, is disclosed. Heat aging the PCC in the...
US-5,641,920 Powder and binder systems for use in powder molding
Provided is a powder and binder system for manufacturing sintered parts from particulate material, and a method of injection molding parts for sintering. The...
US-5,639,345 Two step etch back process having a convex and concave etch profile for improved etch uniformity across a substrate
A novel method for improving the etch back uniformity for inter-metal-dielectric planarization was accomplished. Conventional single etch backs use a high...
US-5,637,684 Phosphoramidate and phosphorothioamidate oligomeric compounds
Compounds are provided having the structure: ##STR1## wherein the L groups are spanner or linker units, the Y and T group are functional groups for...
US-5,635,969 Method and apparatus for the application of multipart ink-jet ink chemistry
A multi-color ink-jet printing system includes a printing element for applying a precisely metered quantity of a colorless precursor in a binary or ternary...
US-5,634,461 System for measuring blood oxygen levels
A system and software is described for calculating, in real-time, the mixed venous partial pressure of oxygen in a patient. The system uses a computer, an...
US-5,632,904 Water disinfection method using metal-ligand complexes
Metal-ligand complexes produced by coordination chemistry for use as a biocide and a method for detoxifying water or effluent are disclosed. Metallic biocides...
US-5,631,398 Method for the production of (3-alkoxycarbonyl-2-butenyl) triphenylphosphonium salts
A 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 building...
US-5,631,322 Polymers of N-acryloylmorpholine activated at one end and conjugates with bioactive materials and surfaces
Polymers of the monomer N-acryloylmorpholine having a single reactive moiety at one end of the polymer chain have the following structure: ##STR1## wherein...
US-5,631,167 Capsule chemistry analytical methods employing dioxetane chemiluminescence
Improved assay methods utilizing stable, enzymatically triggered chemiluminescent 1,2-dioxetanes with improved water solubility are provided. Assays are...
US-5,631,121 Photographic processing
It is important to control the temperature during the development stage of a photographic process in order to maximize the efficiency thereof. This is a...
US-5,629,434 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-5,629,384 Polymers of N-acryloylmorpholine activated at one end and conjugates with bioactive materials and surfaces
Polymers of the monomer N-acryloylmorpholine having a single reactive moiety at one end of the polymer chain have the following structure: ##STR1## wherein...
US-5,628,960 Composite cellulose nitrate membrane on polyester support
There is disclosed a composite isotropic cellulose nitrate membrane on a polyester support and a method of making the same, the membrane having particular...
US-5,625,656 Method for monitoring noble metal distribution in reactor circuit during plant application
A method for ensuring the distribution of noble metal in the reactor circuit during plant application without measuring the reactor water for noble metal content...
US-5,624,638 Modular laboratory equipment and coupling system
A personal, miniaturized, multipurpose test kit for performing a plurality of chemical tests and procedures, which include interchangeable multifunctional...
US-5,623,196 Apparatus and method of simulating high battery temperature in a rechargeable battery
A device (111) for simulating a high battery temperature used in charging a rechargeable cell (101). The device takes advantage of a control signal generated by...
US-5,623,109 Plant monitoring and diagnosing method and system, as well as plant equipped with the system
Plant operating conditions 1, apparatus operating conditions 2 and environment conditions 3 are accumulated, combined and put together as a set of plant status...
US-5,622,974 .alpha.-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-5,621,180 Capillary sampling flow controller
A capillary sampling flow controller provides an improvement in the process of sampling or monitoring for the analysis of air and gas chemistries; a constant...
US-5,620,615 Method of etching or removing W and WSi.sub.x films
The present invention teaches a method for etching or removing a tungsten (W) film and a tungsten silicide (WSi.sub.x) film during a semiconductor fabrication...
US-5,618,513 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-5,616,316 Dentifrice-compatible silica particulates
Novel silica particulates especially adapted for formulation to dentifrice compositions exhibit unique physical and chemical properties. In one embodiment,...
US-5,616,235 Electrochemical stabilization of soils and other porous media
Suitable electrolyte conditioning at the electrodes greatly facilitates the transport of desired ions through soil, enhancing the ability of electrokinetic...
US-5,614,177 Dentifrice-compatible silica particulates
Novel silica particulates especially adapted for formulation to dentifrice compositions exhibit unique physical and chemical properties. In one embodiment,...
US-5,614,176 Dentifrice-compatible silica particulates
Novel silica particulates especially adapted for formulation to dentifrice compositions exhibit unique physical and chemical properties. In one embodiment,...
US-5,612,020 Dentifrice-compatible silica particulates
Novel silica particulates especially adapted for formulation to dentifrice compositions exhibit unique physical and chemical properties. In one embodiment,...
US-5,610,017 Method for conducting a polymerase chain reaction using an improved electrochemiluminescent label
This invention relates to a new electrochemiluminescent (ECL) label for oligonucleotides using phosphoramidite chemistry.
US-5,609,775 Dry etch process for titanium-tungsten films
A method for dry etching a composite metal film, consisting of an aluminum overlay film, a titanium--tungsten film, and a titanium underlay film, is described....
US-5,604,242 Heterocyclic chemistry
The present invention relates to therapeutically active azaheterocyclic compounds, a method of preparing the same and to pharmaceutical compositions comprising...
US-5,603,351 Method and system for inhibiting cross-contamination in fluids of combinatorial chemistry device
A system and method for accomplishing a plurality of combinatorial processes in parallel comprising a microelectronic and fluidic array (device array) having...
US-5,601,991 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...
US-5,599,695 Printing molecular library arrays using deprotection agents solely in the vapor phase
A method and apparatus for selectively applying a print material onto a substrate for the synthesis of an array of oligonucleotides at selected regions of a...
US-5,597,983 Process of removing polymers in semiconductor vias
A method for forming a contact via in an integrated circuit includes the formation of an aluminum conductive element on an integrated circuit device. A conformal...
US-5,597,910 Electrochemiluminescent label for DNA probe assays
This invention relates to a new electrochemiluminescent (ECL) label for oligonucleotides using phosphoramidite chemistry.
US-5,597,868 Polymeric anti-reflective compounds
Anti-reflective coatings and methods for forming these anti-reflective coatings are disclosed that have a polymer chemistry and optical characteristics suitable...
US-5,597,532 Apparatus for determining substances contained in a body fluid
An apparatus for the optoelectronic evaluation of test paper strips for use in the detection of certain analytes in blood or other body fluids. The test strip...
US-5,596,207 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...
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