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Searching: chemistry





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Patent # Description
US-4,940,945 Interface circuit for use in a portable blood chemistry measuring apparatus
An interface circuit for use in a portable apparatus for measuring the electrochemical characteristics of a sample is disclosed. A disposable cartridge,...
US-D309,015 Fluid cartridge for holding reagents in an automated clinical chemistry analyzer
US-4,937,364 Novel disilacyclohexane compound and process for preparing the same
A disilacyclohexane compound represented by the following general formula (I): ##STR1## wherein R's may be the same or different and each represent an alkyl...
US-4,937,308 Preparation of alkyl O,O-dialkyl-.gamma.-phosphonotiglates
Alkyl .gamma.-halotiglates of the general formula I ##STR1## where X is Cl or Br and R.sup.2 is alkyl of 1 to 3 carbon atoms, having a high E isomer...
US-4,937,188 Enzyme activity amplification method for increasing assay sensitivity
Enzyme amplification is achieved by covalently bonding enzyme to a supporting material via a molecular chain which is a substrate for the enzyme, then...
US-4,936,465 Method and apparatus for fast, reliable, and environmentally safe dispensing of fluids, gases and individual...
A method and apparatus for controlling flows of fluids, suspensions, gases, aerosols, and for sorting individual particles, flowing in transporter ducts of a...
US-4,929,426 Portable blood chemistry measuring apparatus
A portable apparatus for measuring the electrochemical characteristics of a sample is disclosed. A disposable cartridge, including a plurality of interconnected...
US-4,927,809 Oligopeptidyl nitrile derivatives, agents containing them and their use
Compounds of the formula I in which R.sup.1 is the cyanide group, R is Pro or D--Phe--Pro, A is a hydrogen atom or a protective group customary in peptide chemistry, ...
US-4,923,641 Highly concentrated stable solutions of color-forming agent: for pressure-sensitive recording materials
Highly concentrated stable solutions of color-forming agents of the general formula ##STR1## wherein x denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy,...
US-4,923,562 Processing of etching refractory metals
A processing apparatus and method for anisotropically etching thin film metal (e.g. tungsten) under plasma bombardment conditions by using a feed gas mixture...
US-4,920,208 Basic azo dyestuffs
Basic azo dyestuffs of the general formula ##STR1## and tautomers thereof, in which D is the radical of a diazo or tetrazocomponent free of anionic...
US-4,915,777 Method for etching tungsten
A process wherein a thin film of tungsten is anisotropically etched under plasma bombardment conditions by using a feed gas mixture which includes an etchant and...
US-4,909,065 Contained radiological analytical chemistry module
A system which provides analytical determination of a plurality of water chemistry parameters with respect to water samples subject to radiological ...
US-4,903,947 Fence or other structure vegetation barrier
A length of integral fence or other building structure associated vegetation barrier, for use for eliminating the growth of grass or weeds, the barrier includes...
US-4,902,349 Asphalt/polyol emulsion and process for preparation thereof
An asphalt/polyol emulsion is prepared from asphalt and polyol which are mixed and emulsified with a surface active agent and the plasticizer, by utilizing the...
US-4,892,383 Reservoir fiber optic chemical sensors
A reservoir fiber optic chemical sensor (FOCS) is formed of a modular cell body. A fiber optic is attached using a quick connect standard fiber optic connector....
US-4,891,104 Enzymatic electrode and electrode module and method of use
An improved enzymatic electrode and electrode module specifically adapted for use in a medical analyzer device is disclosed which permits rapid analysis of...
US-4,889,992 Automatic infrared microorganism detection instrument
This invention relates to an instrument for the detection of microorganisms in a culture media by means of the measurement of the gaseous products generated...
US-4,886,681 Metal-polymer adhesion by low energy bombardment
A technique is described for improving metal-organic substrate adhesion and for reducing stress between the metal film and the substrate. Low energy reactive...
US-D305,003 Chemistry analyzer tray
US-D305,002 Chemistry analyzer tray
US-D305,001 Chemistry analyzer tray
US-4,875,410 Decorating bowling balls
A bowling ball, rather than being engraved with a decoration, is printed with the decoration, relying on graft polymerization chemistry by which the printing...
US-4,874,946 Method and apparatus for analyzing the internal chemistry and compositional variations of materials and devices
A method and apparatus is disclosed for obtaining and mapping chemical compositional data for solid devices. It includes a SIMS mass analyzer or similar system...
US-4,869,989 Dry toners containing fanal pigments based on cationic dyes
A dry toner for developing latent electrostatic images in electrostatic recording and printing methods contains, as charge-control substance, a pigment of the...
US-4,854,553 Self shielding lance
Apparatus for introducing stirring and refining agents into molten metal in a vessel using a lance having an elongated refractory body with a bore extending...
US-4,854,263 Inlet manifold and methods for increasing gas dissociation and for PECVD of dielectric 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-4,853,719 Coated ion projection printing head
A fluid flow assisted ion projection printing head having an electrically conductive metal body defining an elongated ion generation chamber, a corona wire...
US-4,849,258 Mechanical barrel plating-process and article
Major improvements in Mechanical Barrel Plating are virtual elimination of expensive glass impact media, elimination of larger size glass balls such as 3 mm and...
US-4,849,067 Method for etching tungsten
A fluorine based metal etch chemistry, wherein an admixture of etch products (or species which are closely related to etch products) is added during the post...
US-4,847,177 Fanal pigments of closed-ring dry toners containing indamine-and diphenylmethane dyestuffs
A dry toner for developing latent electrostatic images in electrostatic copying and printing processes contains, as charge-control substance, a pigment of the...
US-4,842,687 Method for etching tungsten
A thin film metal (e.g. tungsten) is anisotropically etched under plasma bombardment conditions by using a feed gas mixture which includes a fluorine source,...
US-4,839,104 Process for preparing sertraline intermediates
A novel three-step process for preparing 4-(3,4-dichlorophenyl)-4-phenylbutanoic acid is disclosed, which involves (1) reducing...
US-4,838,990 Method for plasma etching tungsten
A process wherein a thin film metal (e.g. tungsten) is anisotropically etched under plasma bombardment conditions by using a feed gas mixture which includes a...
US-4,838,098 Contained radiological analytical chemistry module
A system which provides analytical determination of a plurality of water chemistry parameters with respect to water samples subject to radiological ...
US-4,837,161 Method for reagent addition to a flowing liquid carrier stream
An analytical chemistry apparatus and method for introducing a reagent into a flowing stream of liquid carrier in order to quantitatively analyze one or more...
US-4,836,886 Binary chlorofluorocarbon chemistry for plasma etching
A plasma comprised of trifluorochloromethane and an oxidant etches non-insulating materials such as tungsten at very high etch rates when the oxidant comprises...
US-4,835,268 Luminescent cyclic hydrazides for analytical assays
Disclosed herein are derivatives of 5-(lower alkyl)-7-amino-2,3-dihydro-1,4-phthalazinedione having substituents on the amino group. The derivatives have...
US-4,833,622 Intelligent chemistry management system
A system (10) particularly suited for employment for purposes of effectuating the monitoring, diagnosing and controlling of the chemistry of the water and steam...
US-4,830,217 Body fluid sample collection tube assembly
An assembly is provided for receiving, maintaining and storing blood samples taken from individuals some of whom may have a disease which can contaminate anyone...
US-4,827,944 Body fluid sample collection tube composite
A composite body fluid sample container is provided which incorporates at least one dry chemistry test strip into the structure with a shrink-wrap film whereby a...
US-4,824,738 Controlling oxygen concentrations in fuel cell cooling water loops
In order to achieve good stack water chemistry and minimize corrosion in a fuel cell stack water cooling loop, the oxygen concentration in the water must remain...
US-4,820,792 Preparation of aromatic polyketones using a strong acid catalyst with a weaker acid solvent
Polyaryletherketones are synthesized by Friedel-Crafts chemistry using a catalytic quantity of a strong acid (e.g. trifluoromethanesulphonic acid) in a solvent...
US-4,820,552 Coated zinc, chemistry and manufacturing process
A process for making coated zinc metal flakes, wherein finely divided zinc metal powder is dispersed and coated, using a high speed disperser, or the like, in...
US-4,820,545 Method of bonding ceramic orthodontic appliances
A method of enhancing the bondability of ceramic orthodontic brackets or other dental attachments for improving the bonding strength between such attachments and...
US-4,819,711 Compactability and permeability control for fabricating ECP mold
A method of controlling, during the act of mold fabrication in real time, the compactability and permeability of a sand mold containing an evaporative foam...
US-4,812,569 Chromogenic phthalides
Chromogenic phthalides of the general formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another denote hydrogen, alkyl, alkenyl, aralkyl,...
US-4,806,654 Processes for the preparation of benzo(chalcogeno)(4,3,2-cd)indazoles and intermediates thereof
Improved processes for producing substituted benzo(chalcogeno)[4,3,2-cd] indazoles. The processes produce compounds in higher yields and of greater purity by...
US-4,804,475 Metallized membrane systems
Polymer membranes metallized by wet chemistry are highly suitable, for example, for the separation of inert, reactive and fermentation gases. The metallization is...
US-4,801,886 Mounting means for water chemistry analysis device
An improved method of attachment of a pH or p sensor in the recirculation/filtration line for a pool or spa or for forming a T-connection between any two pipes...
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