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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 3993572 | Rare earth containing catalyst composition Catalysts suitable for promoting selected oxidation and reduction reactions; especially for eliminating or substantially reducing pollutants in waste gas streams such as automobile exhaust, or nitric acid plant tail gas, are described, as are processes fo... | 11/23/1976 |
| 3990995 | Exhaust gas conversion catalyst and process Process and catalyst for the catalytic conversion of nitrogen oxides (NOx), unburned hydrocarbons and carbon monoxide in internal combustion engine exhaust gases. The catalyst comprises rhodium as the essential active component, preferably comp... | 11/09/1976 |
| 3979337 | Catalyst for reducing nitrogen oxides A process for the preparation of a catalyst for reducing nitrogen oxides, which comprises impregnating a heat-resistant carrier with at least one carboxylate of the iron group metals and copper, converting the impregnated metallic carboxylate to the metal... | 09/07/1976 |
| 3978005 | Catalyst for contact reduction of NOx in engine exhaust gases and method of producing same A catalytic alloy composed of 60-95% Ni, 2.5-20% Cu and 2.5-20% Co is electrodeposited on a carrier. The plating bath is an aqueous solution of the sulfates of the alloy component metals, containing a complexing agent such as Rochell salt to cause deposit... | 08/31/1976 |
| 3976745 | Process for reducing nitrogen oxides to nitrogen A catalyst composition for reducing nitrogen oxides, which is characterized in that the same contains, as its chief ingredient, A. tin (Sn) as the component A, and B. at least one metal selected from the group consisting of molybdenum (Mo), tungsten (W), and i... | 08/24/1976 |
| 3974255 | Method for treatment of engine exhaust gases Improved methods for reducing the amounts of hydrocarbon, carbon monoxide and nitrogen oxides in the exhaust gases of internal combustion engines involving the use of catalysts comprising a major amount of crystalline magnesium aluminate spinel. Improved ... | 08/10/1976 |
| 3972837 | Catalyst for purifying automotive exhaust gases This invention relates to catalyst for use in the control of atmospheric pollution and, in particular, to the purification of exhaust gases from internal combustion engines. Specific catalysts of the present invention comprise: A. ruthenium or an alloy th... | 08/03/1976 |
| 3972831 | Nitrogen oxide reduction system A system is proposed for the purification of exhaust gases from internal combustion engines, preferably the reduction of nitrogen oxides in exhaust gases from internal combustion engines in which nitrogen is selectively formed as substantially the only ni... | 08/03/1976 |
| 3969480 | Nickel base nox reducing catalytic structure A system for reducing NOx gases found in the exhaust stream of the internal combustion engine is provided which includes an internal combustion engine having associated therewith a means for supplying fuel and oxygen to the engine, a manifold s... | 07/13/1976 |
| 3966391 | Method of combustion using high temperature stable catalysts Catalysts having good high temperature stability which are particularly useful for selected high temperature reactions are disclosed as are methods for their preparation and use. The catalytically-active materials include platinum group metal deposited on... | 06/29/1976 |
| 3966645 | Catalyst A catalyst suitable, for example, for the treatment of car exhaust emissions comprises an unagglomerated atomic dispersion, said coated particles being in association with support material compatible with the coated particles, such that the support materi... | 06/29/1976 |
| 3957692 | Method of preparing a catalyst A catalyst suitable, for example, for treatment of cat exhaust emissions is prepared by providing a substrate with a continuous adherent, surface layer of a carrier material for catalytic material by providing on the substrate a layer of carrier material,... | 05/18/1976 |
| 3957691 | Catalyst for treating exhaust gas from engine vehicles A catalyst for treating exhaust gas from engine vehicles which comprises a intered substance composed of ferric oxide and at least one metallic oxide and forming at least in part a spinel crystal structure. This catalyst can be strengthened by adding alumi... | 05/18/1976 |
| 3956189 | Catalyst for treating combustion exhaust gas The exhaust gas discharged from an engine such as an internal combustion engine or the like is treated to convert harmful or noxious pollutant components such as nitrogen oxides, carbon monoxide and unburned hydrocarbons to innocuous compounds, by contact... | 05/11/1976 |
| 3956459 | Process for the elimination of pollutants in exhaust gases An improved process for oxidation of exhaust gases emanating from internal combustion engines which utilizes a stabilized alumina support containing a uniform distribution of cupric oxide and chromic oxide as a first promoter level and thereover palladium... | 05/11/1976 |
| 3953363 | Catalyst for purifying exhaust gases A catalyst for removing nitrogen oxides, carbon monoxide, and hydrocarbons in exhaust gases, said catalyst being prepared by supporting copper and nickel on a carrier and then further supporting at least two components selected from the group consisting o... | 04/27/1976 |
| 3951860 | Catalyst This invention relates to a catalyst comprising an inert material impregnated or coated with a mixture or alloy of platinum and rhodium in which rhodium is present in an amount up to 20 wt.%. The catalyst is particularly suitable for use in 1) catalytical... | 04/20/1976 |
| 3950491 | Reactivation of automobile exhaust oxidation catalyst Oxidation catalysts containing platinum or other noble metal components used in automobile exhaust emission control are reactivated, after thermal deactivation, by subjecting the catalyst to a halogen-containing gas at a temperature of from 500°F. to abo... | 04/13/1976 |
| 3945948 | Catalyst and the process for preparing it This invention relates to catalysts for use in the control of atmospheric pollution. The catalysts of the present invention are especially useful in the purification of exhaust gases from internal combustion engines and comprise oxidised ruthenium or ruth... | 03/23/1976 |
| 3945947 | Catalyst for purifying exhaust gases A multi-component catalyst composition prepared by combining (A) noble metal catalyst elements effective for oxidizing carbon monoxide and hydrocarbons with (B) catalyst elements effective for the same purpose but containing no noble metal. The multi-comp... | 03/23/1976 |
| 3944504 | Catalyst for the diminution of automobile exhaust gases A catalyst for the diminution of automobile pollution and a method for forming the catalyst are described. The catalyst comprises a metal alloy substrate having a specified composition, an oxide layer containing a large proportion of alumina on the surfac... | 03/16/1976 |
| 3944505 | Catalytic structure A catalytic device is made up of a stack of expanded metal sheets held spaced apart by wires between the sheets. The assembly is welded together to form a rigid block and the expanded metal sheets having a coating of metal aluminide covered with alpha alu... | 03/16/1976 |
| 3939104 | Catalytic process In a supported catalyst for treating internal combustion engine exhaust gases the active material comprises a non-noble metal or compound thereof and the support comprises a primary support carrying a secondary support; the secondary support consists esse... | 02/17/1976 |
| 3939097 | Exhaust gas cleaning catalysts and method of producing same Exhaust gas cleaning catalysts are produced by alloying copper and aluminum with at least one of the elements, nickel and chromium, and eluting by alkali or acid means aluminum from the cooled alloy surface. Small amounts of other metals from the fourth o... | 02/17/1976 |
| 3932309 | Auto exhaust catalysts prepared from sulfite treated platinum and palladium salt solutions A process for preparing a catalyst that has improved activity and efficiency for conversion of hydrocarbons is disclosed. The catalyst is prepared by applying sulfito complexes have the emperical formula M6 (x) (SO3)4 wher... | 01/13/1976 |
| 3931050 | Catalyst for purifying exhaust gas from vehicles A catalyst for purifying exhaust gas from vehicles comprises a monolithic carrier having a plurality of exhaust gas passages penetrating through the carrier, a layer of active refractory metallic oxide such as .gamma.-alumina, containing 1 to 20% by weigh... | 01/06/1976 |
| 3931054 | Method of catalyst manufacture A method of impregnating a catalytic component as a subsurface layer on a carrier material. The carrier material is immersed in an impregnating solution containing a catalytic component and a dibasic carboxylic acid, with a sulfur-containing carboxylic ac... | 01/06/1976 |
| 3931049 | Method for producing a catalyst A catalyst for the reduction of automobile pollution and a method for forming the same are described. The catalyst comprises a nickel alloy substrate having specified composition and a surface layer containing from 10 to 50% copper. The copper concentrati... | 01/06/1976 |
