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| Number | Title | Issue Date |
| 6032486 | Reversible jewelry A novel pierced-ear earring comprises a toggle having inner and outer sides and an earpost attached to the inner side. A perforation passes through two other sides of the toggle, and an upper portion of a loop is positioned within the perforation. A penda... | 03/07/2000 |
| 4859798 | Oxidation of alkanes Alkanes are oxidized in the liquid phase at relatively low temperatures using heteropolyacids or polyoxoanions promoted with azide or certain metals. Such azide catalysts are also part of the invention.... | 08/22/1989 |
| 4855485 | Process for production of cinnamates In the process of preparing esters of cinnamic acid by reacting a styrene compound with carbon monoxide, oxygen, and an aliphatic alcohol in the presence of a catalyst, the improvement comprising using less than a stoichiometric amount of a dehydrating ag... | 08/08/1989 |
| 4827023 | Process for the selective formation of dialkyl succinates The invention discloses an improvement to the selective production of dialkyl succinates by the known process of oxidative carbonylation of an olefin with carbon monoxide, oxygen, and an alkyl alochol in the presence of a catalyst wherein the improvement ... | 05/02/1989 |
| 4803187 | Alkane oxidation catalysts Heteropolyacids or polyoxoanions promoted with azide, such as K6 PW11 VO40 N3, useful in the liquid phase oxidation of alkanes.... | 02/07/1989 |
| 4775447 | Process for the production of 2,2-dimethoxypropane The process for the acid-catalyzed reaction of acetone with methanol to form 2,2-dimethoxypropane may be significantly improved if a stoichiometric ratio of methanol/acetone is employed in the initial reaction. Of particular advantage is the use of stoich... | 10/04/1988 |
| 4769161 | Silicate-containing oil recovery compositions There is provided herein a process and composition for the enhanced recovery of oil from subterranean formations comprising injecting in combination with steam a composition comprising (a) an anionic surfactant (b) a hydrotrope, and (c) an alkali metal si... | 09/06/1988 |
| 4766261 | Purification of fluorocarbons Fluorocarbons are purified and toxicity substantially reduced by contact with a substantially dry, strongly basic and strongly nucleophilic alkali or alkaline earth metal compound, and separating the decomposition products which form.... | 08/23/1988 |
| 4759307 | Tanker ballast In order to reduce the economic impact of segregated ballast requirements for tanker vessels, heavy ballast, for example concrete, is placed in the segregated ballast tanks in amount to occupy 30 to 50% of the free volume of the tank. The rest of the tank... | 07/26/1988 |
| 4743385 | Oil recovery agent There is provided herein a process and composition for the enhanced recovery of oil from subterranean formations comprising injecting in combination with steam a composition comprising (a) an anionic surfactant and (b) a hydrotrope.... | 05/10/1988 |
| 4742050 | Sensitization of hypoxic tumor cells and control of growth thereof Method of sensitizing hypoxic tumor cells to radiotherapy and chemotherapy by contacting the cells or the vasculature thereof with an aqueous dispersion of an oxygen carrying perfluoro compound and a dispersant for the compound, and sensitizing chemothera... | 05/03/1988 |
| 4737591 | Catalyst and process for production of cinnamates A method of preparing esters of cinnamic acid comprising catalytically reacting a styrene compound with carbon monoxide, oxygen, and an aliphatic alcohol. The catalyst is essentially a combination of a palladium (II) compound and a copper salt. A catalyti... | 04/12/1988 |
| 4732883 | Catalytic oxidation of propylene to allyl acetate Propylene is oxidized directly to allyl acetate in the presence of acetic acid air or oxygen in the liquid phase under moderate reaction conditions employing a palladium-on-carbon catalyst which has been pre-treated be activating it with propylene at temp... | 03/22/1988 |
| 4699214 | Salt-tolerant alkyl aryl sulfonate compositions for use in enhanced oil recovery processes A process is provided for the enhanced recovery of oil with steam in reservoirs containing high concentrations of dissolved salts, wherein certain diaryl sulfonated surfactants are employed in conjunction with the steam which posses high tolerance for sai... | 10/13/1987 |
| 4692426 | Phosphite-promoted ruthenium-cobalt catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers Ruthenium-cobalt carbonyl catalysts which have been promoted with an organophosphite effectively catalyze the dealkoxyhydroxymethylation of aldehyde acetals to form glycol monoethers. Methylal, for example, may be reacted with syngas, i.e., CO and H2... | 09/08/1987 |
| 4682653 | Steam recovery processes employing stable forms of alkylaromatic sulfonates Alkylaromatic sulfonates, and particularly dialkylaromatic sulfonates, useful as surfactants in steam recovery methods for enhancing oil recovery from subterranean formations, have been found to comprise mixtures of meta- and para-isomers of the same obta... | 07/28/1987 |
| 4664331 | Trail cable pickup reel An electric power cable reeling apparatus that can be detachably attached to a rubber tired dozer. The reeling apparatus comprises a frame that is provided with a hydraulic motor and clutch assembly for rotating the cable reel shaft for reeling in the cab... | 05/12/1987 |
| 4663489 | Ruthenium-cobalt carbonyl catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers The cobalt carbonyl catalyst R5 CCo3 (CO)9, desirably with Ru3 (CO)12, wherein R5 is hydrogen; alkyl, preferably C1-5 lower alkyl; cycloalkyl or substituted cycloalkyl; cycloalkenyl, ... | 05/05/1987 |
| 4652542 | Ruthenium-cobalt carbonyl catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers The cobalt carbonyl catalyst R5 CCo3 (CO)9, desirably with Ru3 (CO)12, wherein R5 is hydrogen; alkyl, preferably C1-5 lower alkyl; cycloalkyl or substituted cycloalkyl; cycloalkenyl, ... | 03/24/1987 |
| 4652344 | Preparation of 1,1-dimethoxycyclohexane Dimethoxycyclohexane, prepared by reacting cyclohexanone with methanol, may be recovered from the product mixture in substantially pure form by first adding water as an azeotropic agent to said mixture to form an azeotrope with unreacted cyclohexanone, re... | 03/24/1987 |
| 4649183 | Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems A water-soluble, charged, random copolymer of acrylamide and an alkali metal salt of an acrylamido-alkanoic acid such as alkali metal 3-acrylamido-3-methylbutanoate, having an average molecular weight of greater than about 50,000, has been found to mainta... | 03/10/1987 |
| 4640833 | Use of perfluorobromoalkyl ethers as X-ray contrast agents Method of X-raying animals using as a contrast agent a perfluorobromoalkyl ether of the formula Cm F2m+1 OCn F2n Br where m and n independently are integers of from 2 to 6, wherein the ether is used either neat ... | 02/03/1987 |
| 4620027 | Catalyst and process for production of cinnamates A method of preparing esters of cinnamic acid comprising catalytically reacting a styrene compound with carbon monoxide, oxygen, and an aliphatic alcohol. The catalyst is a combination of a palladium (II) compound, an alkali metal carboxylate and a copper... | 10/28/1986 |
| 4618729 | Ruthenium-cobalt carbonyl metal cluster catalysts for the dealkoxyhydroxymethylation of acetals to form glycol ethers The ruthenium-cobalt carbonyl metal cluster catalyst Co2 Ru(CO)11 effectively catalyzes the dealkoxyhydroxymethylation of aldehyde acetals to form glycol monoethers. Methylal, for example, may be reacted with syngas, i.e., CO and H | 10/21/1986 |
| 4617287 | Ruthenium-cobalt carbonyl catalysts for the dealkoxyhydroxymethylation of aldehyde acetals to form glycol ethers Ruthenium carbonyl-cobalt carbonyl catalyst mixtures effectively catalyze the dealkoxyhydroxymethylation of aldehyde acetals, wherein said acetal may be prepared separately or in situ from an aldehyde and an alcohol. Methylal, for example, may be reacted ... | 10/14/1986 |
| 4613411 | Process for the production and purification of diethoxymethane by azeotropic distillation Diethoxymethane (ethylal), prepared by reacting formaldehyde with ethanol, may be recovered from the product mixture in substantially pure form by first distilling off an azeotrope comprising ethanol and diethoxymethane, adding a selected solvent to the a... | 09/23/1986 |
| 4602103 | Process for the oxidation of butenes to linear acetates C4 olefins comprising cis- and trans-butane-2 and butene-1 may be oxidized to their corresponding mono- and diacetates in the presence of acetic acid and an olefin-activated palladium catalyst under mild conditions. With this catalyst, and depe... | 07/22/1986 |
| 4602104 | Catalytic oxidation of propylene to allyl acetate Propylene is oxidized directly to allyl acetate in the presence of acetic acid with air or oxygen in the liquid phase under moderate reaction conditions employing a palladium-on-carbon catalyst which has been pre-treated by activating it with propylene at... | 07/22/1986 |
| 4594148 | Extraction of aromatics with ethyl acetoacetate This invention relates to an energy efficient process for the solvent extraction of aromatic hydrocarbons from hydrocarbon streams containing the same, using as the solvent ethyl acetoacetate. This solvent may be recovered from the aromatics by cooling th... | 06/10/1986 |
| 4584358 | Calcium-tolerant N-substituted acrylamides as thickeners for aqueous systems A water-soluble ionically-charged random copolymer of acrylamide and an alkaline or alkali metal 3-acrylamido-3-methylbutanoate having an average molecular weight of greater than about 50,000 has been found to maintain unusually stable and effective visco... | 04/22/1986 |
| 4575564 | Catalyst and process for hydroformylation of olefins Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes. The novel catalyst compris... | 03/11/1986 |
| 4569784 | Preparation of a gel having gas transporting capability An inert, water-immiscible inert organic liquid having gas transport properties, water and a suitable emulsifying agent are formed into a stable gel by emulsifying a mixture of the same, concentrating the emulsion to form a gel phase and a liquid phase, a... | 02/11/1986 |
| 4569755 | Extraction of aromatics with N-cyclohexyl-2-pyrrolidone This invention relates to a low energy process for the solvent extraction of aromatic hydrocarbons from hydrocarbon streams containing the same, using as the solvent N-cyclohexyl-2-pyrrolidone together with small amounts of water. This solvent may be reco... | 02/11/1986 |
| 4564711 | Hydroformylation catalyst and process Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes. The novel catalyst compris... | 01/14/1986 |
| 4551559 | Hydroformylation catalyst and process Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes. The novel catalyst compris... | 11/05/1985 |
| 4545710 | Apparatus for automated less-than-truck load shipments A knock-down support system for standard-sized containers which enables the containers to be automatically handled on rails, hangers or the like for routing, loading and unloading onto trucks.... | 10/08/1985 |
| 4542120 | Hydroformylation catalyst and process Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes. The novel catalyst compris... | 09/17/1985 |
| 4542119 | Hydroformylation catalyst and process Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rate and improved selectivity of linear aldehydes over branched aldehydes. The novel catalyst comprise... | 09/17/1985 |
| 4542242 | Platinum (O) complex-based hydroformylation catalyst Olefins are hydroformylated with syngas in the presence of a novel organometallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectively of linear aldehydes over branched aldehydes. The novel catalyst comprise... | 09/17/1985 |
| 4528278 | Catalyst for hydroformylation of olefins Olefins are hydroformylated with syngas in the presence of a novel organo metallic complex catalyst to form the corresponding aldehydes at high reaction rates and improved selectivity of linear aldehydes over branched aldehydes. The novel catalyst compris... | 07/09/1985 |
