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| Number | Title | Issue Date |
| 7713474 | Liquid permeable composition in dry reagent devices A device for detecting an analyte in a fluid sample includes a liquid permeable composition for making a physical separation between compositions of the sample or for reacting with components. The liquid permeable composition has adhesive properties and can be used ... | 05/11/2010 |
| 7563621 | Absorbing organic reagents into diagnostic test devices by formation of amine salt complexes A method of applying an organic acid reagent having limited transolubility in organic solvents, aqueous solvents, and mixtures thereof to a component of a diagnostic test device by mixing an organic acid reagent and an amine to form a salt complex, dissolving the sa... | 07/21/2009 |
| 7459127 | Method and apparatus for precise transfer and manipulation of fluids by centrifugal and/or capillary forces A micro-liter liquid sample, particularly a biological sample, is analyzed in a device employing centrifugal and capillary forces. The sample is moved through one or more sample wells arrayed within a small flat chip via interconnecting capillary passageways. The pa... | 12/02/2008 |
| 7435381 | Packaging of microfluidic devices A microfluidic device containing liquid reagents having an extended shelf life contains the liquid reagents in micro-reservoirs that limit the escape of moisture to less than 10% over the shelf life of the device. The micro-reservoir preferably is made of polypropyl... | 10/14/2008 |
| 5597545 | Recovery of HF from aqueous streams HF can be recovered from aqueous streams, particularly those which are dilute and have a concentration of HF lower than the azeotrope between HF and water. Such aqueous streams are contacted with carbon molecular sieves, preferably those having an average... | 01/28/1997 |
| 5580770 | Support containing particulate adsorbent and microorganisms for removal of pollutants A biologically active support for removing pollutants from a fluid stream such as waste water is prepared. The support is formed of a polymeric foam substrate coated with a composition containing a particulate adsorbent which adsorbs, then releases pollut... | 12/03/1996 |
| 4870138 | Semi-interpenetrating polymer networks Novel compositions of matter comprising semi-interpenetrating polymer networks resulting from the reaction between a poly(vinyl benzyl ether) of a polyphenol and engineering condensation thermoplastic may be used as components in a laminate when coated on... | 09/26/1989 |
| 4868148 | Layered automotive catalytic composite This invention relates to a catalytic composite for treating an exhaust gas comprising a first support which is refractory inorganic oxide having dispersed thereon at least one noble metal component and having dispersed immediately thereon an overlayer co... | 09/19/1989 |
| 4868149 | Palladium-containing catalyst for treatment of automotive exhaust and method of manufacturing the catalyst This application relates to a catalyst for treating automotive exhaust. The catalyst comprises a honeycomb carrier having deposited thereon a layer of alumina which has dispersed thereof lanthanum oxide, cerium oxide, palladium oxide and rhodium metal. Th... | 09/19/1989 |
| 4855375 | Styrene terminated multifunctional oligomeric phenols as new thermosetting resins for composites Thermosetting resins which are essentially vinylbenzyl end-capped ethers of the oligomeric condensation products of certain dihydric phenols and formaldehyde are readily polymerized to give an extensively cross-linked polymer particularly useful in printe... | 08/08/1989 |
| 4824528 | Gas detection apparatus and method with novel electrolyte membrane Apparatus and method for detecting and measuring hydrogen and gaseous compounds capable of dissociating into or combining with hydrogen ions using a solid electrolyte concentration cell. A novel solid electrolyte membrane is used which comprises an organi... | 04/25/1989 |
| 4806596 | Homogeneous thermoset copolymers Homogeneous thermoset copolymers which may be used in the preparation of laminates for circuitry boards will comprise a poly(vinyl benzyl ether) of a polyphenol and a polyalkadiene in which the alkadiene monomer will contain from 3 to about 8 carbon atoms... | 02/21/1989 |
| 4797185 | Hydrogen separation and electricity generation using novel electrolyte membrane Apparatus and method for performing an electrochemical process involving hydrogen and gaseous compounds capable of dissociating into or combining with hydrogen ions using a solid electrolyte concentration cell. Specific applications are fuel cells for pro... | 01/10/1989 |
| 4795536 | Hydrogen separation and electricity generation using novel three-component membrane Apparatus and method for performing an electrochemical process involving hydrogen and gaseous compounds capable of dissociating into or combining with hydrogen ions using a solid electrolyte concentraton cell. Specific applications are fuel cells for prod... | 01/03/1989 |
| 4795533 | Gas detection apparatus and method with novel three-component membrane Apparatus and method for detecting and measuring hydrogen and gaseous compounds capable of dissociating into or combining with hydrogen ions using a solid electrolyte concentration cell. A novel solid electrolyte membrane is used which comprises a three-c... | 01/03/1989 |
| 4786700 | Homogeneous thermosetting copolymers Homogeneous thermosetting copolymers comprising a mixture of styrene-terminated tetrakisphenols and compounds containing at least one pendant vinyl group as exemplified by styrene-terminated tetrakisphenol ethane and styrene-terminated bisphenol A will po... | 11/22/1988 |
| 4786733 | Direct fluorination of substituted pyridines Substituted pyridine compounds particularly alkyl-substituted pyridines, are directly fluorinated to the corresponding 2-fluoro alkyl-substituted pyridines. Fluorine gas, preferably diluted with an inert gas, is passed into the substituted pyridine, prefe... | 11/22/1988 |
| 4782116 | Homogeneous thermoset terpolymers Homogeneous thermoset terpolymers which may be used in the preparation of laminates for circuitry boards will comprise a diepoxide of a polyether of a polyphenol, a dicyanate ester of a polyether of a polyphenol and an alkenyl aryl compound. The polymers ... | 11/01/1988 |
| 4777227 | High temperature thermosetting resin compositions High temperature thermosetting resin compositions which may be used as a polymer matrix for a printed circuit board will comprise a terpolymer of an ethylenically monosubstituted unsaturated monomer in which said substituent is an aromatic moiety such as ... | 10/11/1988 |
| 4777226 | Terpolymer from (1) a poly(vinylbenzylether) of a polyphenol (2) a cyanate ester of a polyphenol and (3) alkenyl aryl compound Homogeneous thermoset terpolymers which may be used in the preparation of laminates for circuitry boards will comprise a poly(vinyl benzyl ether) of a polyphenol, a dicyanate ester of a polyether of a polyphenol and an alkenyl aryl compound. The polymers ... | 10/11/1988 |
| 4767839 | Alternating aliphatic-aromatic poly(esteramide) Poly(esteramide) having thermotropic polymorphic properties is characterized by the repeating structure ##STR1## where: x=integers from 1 to 14 Y=integers from 3 to 9 R1, R2 =H when x+y is an odd integer, properties usually associate... | 08/30/1988 |
| 4766266 | Dehydrogenation of isobutane Isobutane is dehydrogenated to isobutylene with minimal, preferably no more than 15%, loss of the fresh feed isobutane by structural isomerization or cracking, even when the dehydrogenation feed contains substantial amounts of isobutylene. The catalysts e... | 08/23/1988 |
| 4755316 | Refrigeration lubricants Compression refrigeration equipment using tetrafluoroethane as a working fluid employs polyoxyalkylene glycols which are at least difunctional with respect to hydroxyl groups and a molecular weight between 300 and 2000. The mixtures of the glycols with th... | 07/05/1988 |
| 4752336 | Evaporative corrosion preventive film Temporary corrosion protection for fresh metal surfaces may be obtained by depositing a thin film of a protective organic compound, particularly a fatty acid ester, from a solvent, preferably a fluorocarbon on the surface to be protected. The film-forming... | 06/21/1988 |
| 4698187 | Preparation of carboxylic acid anhydrides A carboxylic acid anhydride such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal.... | 10/06/1987 |
| 4666632 | Process for the preparation of anthraquinone Anthraquinone is produced by reacting phthalic anhydride with benzene in the liquid phase over a super acid catalyst which may be an oxide of the Group 4b metals zirconium, hafnium, and titanium, or the Group 5b metals niobium, tantalum, and vanadium, pre... | 05/19/1987 |
| 4663303 | Process for preparing silver catalysts A silver salt solution suitable for depositing silver on a support in the preparation of silver catalysts is made by reacting a silver compound with a neo-acid, in a hydrocarbon solvent. The reaction is completed under reflux conditions, thereby removing ... | 05/05/1987 |
| 4663412 | Fluorene containing compounds and negative photoresist compositions therefrom Polymers of fluorene containing compounds which form crosslinked networks are found to provide useful negative photoresists which are sensitive in the ultraviolet wavelength range of between about 200 nm to 300 nm. When used in negative photoresist compos... | 05/05/1987 |
| 4661624 | Process for the production of methyl formate A process for the production of alkyl formates such as methyl formate from the reaction of a carbon monoxide containing gas and an alkyl alcohol, such as methanol, is disclosed. The process features low conversions of alkyl alcohol to alkyl formate, high ... | 04/28/1987 |
| 4661337 | Preparation of hydrogen peroxide Hydrogen peroxide is produced by reacting hydrogen and oxygen in an acidic aqueous solution containing suspended therein a supported Group VIII noble metal catalyst in a system wherein the reaction medium has a thickness of at most about 2 millimeters.... | 04/28/1987 |
| 4661631 | Process for the preparation of acetic acid Acetic acid is produced by reacting methanol with carbon monoxide in the presence of hydrogen, in the presence of a catalyst comprising a molybdenum-nickel or a tungsten-nickel cocatalyst component, in the presence of an iodide, and in the presence of a p... | 04/28/1987 |
| 4659682 | Recovery of noble metal values from carbonylation residues Heavy residues produced by noble metal catalyzed carbonylation reactions and containing Group VIII noble metals, particularly rhodium, are treated with reagents to precipitate solids containing substantially all of the noble metal contained in the residue... | 04/21/1987 |
| 4659518 | Preparation of carboxylic acids A carboxylic acid, such as acetic acid, is prepared by carbonylation of a hydrocarbyl alcohol, such as methanol, by the use of a molybdenum-nickel or tungsten-nickel co-catalyst in the presence of a promoter comprising an organo-phosphorus compound or an ... | 04/21/1987 |
| 4650615 | Purification of carboxylic acid anhydrides contaminated with halogen or halides Carboxylic acid anhydrides are freed from small amounts of halogen and halide moieties by treatment with a phenyl or an alkyl phosphine.... | 03/17/1987 |
| 4631348 | Preparation of acetic acid Acetic acid is prepared by heating methyl formate in the presence of carbon monoxide by the use of a molybdenum-nickel-alkali metal, a chromium-nickel-alkali metal, or a tungsten-nickel-alkali metal co-catalyst in the presence of an iodide or bromide.... | 12/23/1986 |
| 4628121 | Preparation of acetaldehyde Acetaldehyde is prepared by reacting methanol with carbon monoxide and hydrogen in the presence of a catalyst comprising a cobalt component, a tin component, and a halogen component.... | 12/09/1986 |
| 4625060 | Preparation of acetic acid Acetic acid is prepared by heating methyl formate in the presence of carbon monoxide by the use of a molybdenum-nickel or tungsten-nickel co-catalyst in the presence of a promoter comprising an organo-phosphorus compound or an organo-nitrogen compound whe... | 11/25/1986 |
| 4625055 | Preparation of carboxylic acids A carboxylic acid, such as propionic acid, is prepared by carbonylation of an olefin, such as ethylene in the presence of water by the use of a molybdenum-nickel-alkali metal, tungsten-nickel alkali metal, or chromium-nickel-alkali metal co-catalyst in th... | 11/25/1986 |
| 4618705 | Process for conversion of acid anhydrides to alkylidene diesters Carboxylic acid anhydrides are reacted with hydrogen to produce alkylidene diesters with high yield and with ratios of alkylidene diesters and co-product carboxylic acid near the theoretical by carrying out the reaction in the presence of a cobalt carbony... | 10/21/1986 |
| 4609502 | Process for preparing unsaturated nitriles from alkanes Unsaturated nitriles, particularly acrylonitrile, are produced in a process which integrates dehydrogenation of an alkane, particularly propane, to the corresponding olefin, followed by ammoxidation of the olefin in the dehydrogenation reactor effluent to... | 09/02/1986 |
