Easy To Use Patents Search & Patent Lawyer Directory

At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Patents are available using simple keyword or date criteria. If you are looking to hire a patent attorney, you've come to the right place. Protect your idea and hire a patent lawyer.

Searching: chemistry





Search by keyword, patent number, inventor, assignee, city or state:




Patent # Description
US-5,840,430 Stretch cling film and fabrication method
Multilayer thermoplastic stretch wrap film having substantial one-sided cling properties is made without the use of polymers with high levels of n-hexane...
US-5,834,871 Apparatus and methods for cleaning and/or processing delicate parts
The invention utilizes harmonics of certain clamped ultrasound transducers to generate ultrasound within the liquid of an ultrasonic tank and in a frequency...
US-5,834,482 Heterocyclic chemistry
A compound of formula (I). The present invention relates to therapeutically active .beta.-carboline derivatives, a method of preparing the same and to ...
US-5,833,925 Automatic chemistry analyzer with improved ion selective electrode assembly
An ion selective electrode assembly is provided having a sample injection cup, a flow cell analyzer and multiple module pump for simultaneously pumping liquids...
US-5,831,099 Compounds of 1,5-disubstituted-3,7 diaza bicyclo [3.3.0] octanes and products containing the same
Overall, the invention provides the chemistry for the compounds and for the processes to prepare compounds derived from 1,5-diazacyclooctanes. This makes...
US-5,831,070 Printing oligonucleotide 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-5,829,438 System and method for the infusing of tocolytic drugs in response to the onset of premature labor detected by...
The onset of spontaneous abortion or premature labor of a pregnant human female is continuously monitored, potentially for periods of several months and longer,...
US-5,827,181 Noninvasive blood chemistry measurement method and system
A noninvasive blood chemistry measurement method and system isolate measurement contributions due to a patient's blood to accurately measure blood chemistry. In...
US-5,826,592 Control of cigarette smoke chemistry
A cigarette smoke filter element is provided which permits a higher level of flavor to reach the smoker during initial smoking of the cigarette and consequently...
US-5,824,491 Dry reagent test strip comprising benzidine dye precursor and antipyrine compound
A dry reagent test strip for determining the concentration of an analyte in a liquid sample is described. The test strip has a matrix containing reagent...
US-5,821,058 Automated DNA sequencing technique
A process for the electrophoretic analysis of DNA fragments produced in DNA sequencing operations wherein chromophores or fluorophores are used to tag the DNA...
US-5,820,939 Method of thermally spraying metallic coatings using flux cored wire
A method of thermally spraying at least one adherent metallic coating onto an unroughened cleansed aluminum or aluminum alloy substrate to produce a coated...
US-5,817,958 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-5,817,928 Method and apparatus for lubrication fluid analysis
A method is provided for evaluating a multiplicity of lubrication quality parameters. For a particular lubrication system, a parameter profile is designated to...
US-5,817,811 Process for preparing substituted N-ethyglycine derivatives
Processes are described for preparing substituted N-ethylglycine derivatives of the formula ##STR1## in which PG is an amino protecting group which is...
US-5,817,751 Method for synthesis of diketopiperazine and diketomorpholine derivatives
The present invention relates to the areas of organic and medicinal chemistry. More specifically, the present invention is concerned with combinatorial and solid...
US-5,817,573 Semiconductor processing method of providing an electrically conductive interconnecting plug between an...
In one aspect, a semiconductor processing method for connecting a metal layer to a plug when there is a fang gap between the plug and a layer surrounding the...
US-5,816,891 Performing chemical mechanical polishing of oxides and metals using sequential removal on multiple polish...
A chemical mechanical polisher is provided comprising multiple polish platens to sequentially remove any fixed amount of oxide or metal on a semiconductor wafer....
US-5,811,506 Extrudable thermoplastic elastomeric urea-extended polyurethane
An extrudable urea-extended thermoplastic polyurethane elastomer is formed from at least one aliphatic diisocyanate, at least one polyester glycol or polyether...
US-5,807,792 Uniform distribution of reactants in a device layer
A method and apparatus for forming a multi-constituent device layer on a wafer surface are disclosed. The multi-constituent device layer is formed by flowing a...
US-5,807,523 Automatic chemistry analyzer
An automatic chemistry analyzer is provided having a high throughput and a high reliability. The analyzer uses nephelometric and turbimetric analyzers to analyze...
US-5,806,934 Method of using composite cermet articles
Methods for making, methods for using and articles comprising cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two...
US-5,804,103 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 substituted with two or more...
US-5,800,784 Chemical sample treatment system and cassette, and methods for effecting multistep treatment process
This invention is directed to a cassette chemical immobilization and treatment system and method for enabling the performance of various complex chemistries with...
US-5,800,635 Method of achieving a controlled step change in the magnetization loop of amorphous alloys
A magnetic theft detection system includes a glassy metal alloy strip having a value of magnetostriction near zero. The strip has been annealed to produce a step...
US-5,798,261 Distributed pore chemistry in porous organic polymers
A method for making a biocompatible polymer article using a uniform atomic oxygen treatment is disclosed. The substrate may be subsequently optionally grated...
US-5,798,035 High throughput solid phase chemical synthesis utilizing thin cylindrical reaction vessels useable for...
A high throughput chemical synthesis system utilizing cylindrical reaction vessels is disclosed. Reaction vessels are utilized which include a tubular member...
US-5,792,663 High efficiency continuous flow through fractional-volatilization separator system, and method of use
Fractional-volatilization separation systems and methods are disclosed which enable a stable, continuous, non-bubbling liquid flow, essentially constant surface...
US-5,792,431 Multi-reactor synthesizer and method for combinatorial chemistry
Solid phase combinatorial synthesis is carried out in a multi-reactor synthesizer comprising an array of separate reactor cells containing a solid reaction...
US-5,792,403 Method of molding green bodies
Methods for making, methods for using and articles including cermets, preferably cemented carbides and more preferably tungsten carbide, having at least two...
US-5,789,686 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-5,789,256 Detonation/deflagration precursor detection of gases, vapors, aerosols, and mixtures thereof
The present invention and its claims encompass principles, methods, apparatus, and applications for detection, quantification, and monitoring of responses of...
US-5,789,172 Methods of determining the structure of a compound encoded by identifiers having tags
Encoded combinatorial chemistry is provided, where sequential synthetic schemes are recorded using organic molecules, which define choice of reactant, and stage,...
US-5,789,029 Stretch film and fabrication method
Multilayer thermoplastic stretch wrap film having substantial one-sided cling properties is made without the use of polymers with high levels of n-hexane...
US-5,788,927 Unified fluid circuit assembly for a clinical hematology instrument
A unified fluid cell circuit assembly for an analytical instrument, such as a clinical hematology, immunoassy or chemistry or a flow cytometry instrument. The...
US-5,786,496 High oxidation state metal oxo complexes of the PHAB ligand
The present invention provides a new tetradentate bis-amido bis-alkoxo, 1,2-(bis-2,20diphenyl-2-hydroxyethanamido)benzene (H.sub.4 PHAB) and various derivatives...
US-5,785,957 Inclusion of tooth whitening oxidation chemistries into a tooth-paste composition
A tooth-paste composition for whitening teeth and method for manufacture, the composition comprising a water-free, non-hygroscopic base and carbamide peroxide.
US-5,785,927 Vessel handling system useful for combinatorial chemistry
A system for holding laboratory or reaction vessels useful for performing combinatorial chemistry, particularly parallel array synthesis. The system includes a...
US-5,783,496 Methods and apparatus for etching self-aligned contacts
A method in a plasma processing chamber for fabricating a semiconductor device having a self-aligned contact. The method includes the step of providing a wafer...
US-5,783,038 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-5,780,251 Ultrasensitive single-step, solid-state competitive immunoassay sensor with interference modifier and/or gel layer
Simplicity, sensitivity and versatility of optical sensors based on competitive immunoassays using antibody-antigen reactions are achieved by solid-state,...
US-5,779,867 Dry chemistry glucose sensor
A self contained glucose sensor is provided that generally comprises a strip type glucose sensing electrode having an active surface comprising an organic...
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...
← Previous | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 | Next →

File A Patent Application

  • Protect your idea -- Don't let someone else file first. Learn more.

  • 3 Easy Steps -- Complete Form, application Review, and File. See our process.

  • Attorney Review -- Have your application reviewed by a Patent Attorney. See what's included.