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| Number | Title | Issue Date |
| 4596495 | Spud bushing system for mobile offshore arctic drilling structure A spud bushing system for a mobile offshore arctic drilling structure that permits removal of a spud bushing in a controllable manner even under load. The spud bushing system is characterized by a bushing seat fixed in the structure, an annular bushing su... | 06/24/1986 |
| 4579481 | Mobile offshore drilling structure for the arctic A mobile platform structure, installation and method for use in arctic waters where the dominant environmental loading threats are posed by winter ice pressures and summer ice floes. The structure includes an ice load bearing, submergible substructure and... | 04/01/1986 |
| 4544673 | Process for producing low molecular weight hydrocarbons from carbon monoxide and hydrogen Low molecular weight hydrocarbons are produced by contacting carbon monoxide and hydrogen at elevated temperatures and pressures with a catalyst comprising oxides of chromium, molybdenum and/or tungsten, copper, thorium or uranium and at least one alkali ... | 10/01/1985 |
| 4456694 | Catalysts for producing alcohols from olefins and synthesis gas Olefins, carbon monoxide and hydrogen are catalytically reacted with rhodium catalysts to produce alcohols in a single step reaction.... | 06/26/1984 |
| 4359407 | Catalyst compositions especially useful for preparation of unsaturated acids The present invention is a catalyst composition consisting of oxides or oxide complexes that contains catalytically significant amounts of uranium or thorium plus, tungsten, vanadium and molybdenum plus optionally one or more of Co, Ni, Zn, Cu, Mg, Mn, Bi... | 11/16/1982 |
| 4341640 | Urea hydrolysis The process for the purification of urea containing waste streams is improved by conducting the purification in a vessel having at least one treating zone wherein the urea containing waste stream is both hydrolyzed and stripped of the products of the urea... | 07/27/1982 |
| 4328075 | Removal of cyanides from acetonitrile The present invention relates to a process for removing cyanides from a crude acetonitrile stream. Caustic and formaldehyde are added to an aqueous acetonitrile stream that contains cyanide. The formaldehyde "kills" the cyanides and provides a waste strea... | 05/04/1982 |
| 4312787 | Coated catalysts containing high loading of active phase, particularly useful in the preparation of maleic anhydride Catalysts particularly effective in the oxidation of n-butane, n-butenes, 1,3 butadiene and mixtures thereof with molecular oxygen or an oxygen-containing gas in the vapor phase to produce maleic anhydride are provided which comprise an essentially inert,... | 01/26/1982 |
| 4309392 | Process for removing nitrogen oxides from a gas stream The invention herein is directed toward a process for the conversion of oxides of nitrogen to nitrogen gas by employing a reactant carbon fiber or inter host carbon material at a temperature of about 550° C. The reactant material can be utilized alone or... | 01/05/1982 |
| 4303550 | Methods for the regeneration of deactivated phosphomolybdic acid based catalysts The present invention relates to a method for the regeneration of deactivated PMA based catalysts by imbibing an aqueous volatile base within the pore structure of the deactivated catalyst so as to form a fluid phase within the pore structure, adding a vo... | 12/01/1981 |
| 4301090 | Carbonylation of olefinically unsaturated compounds Oxygenated organic compounds, e.g. esters, aldehydes, and amides, are prepared by reacting an olefinically unsaturated compound with carbon monoxide and a compound containing a replaceable hydrogen atom in the presence of a catalyst comprising cobalt carb... | 11/17/1981 |
| 4293443 | Oxidation catalysts Catalysts comprising the combined oxides of vanadium and at least one element selected from the group consisting of boron, niobium, tantalum, antimony, tungsten and chromium have been found to be especially effective in the oxidation of n-butane, n-butene... | 10/06/1981 |
| 4290783 | Process for removal of water soluble particulate material from gas streams The present invention relates to a new and improved process for the removal of urea entrained in air streams by passing the particulate-laden air through a mist eliminator or a demister, the surface of which is continuously contacted with multiple water s... | 09/22/1981 |
| 4256915 | Production of ethylenically unsaturated aliphatic acids The present invention relates to a process for the production of unsaturated aliphatic acids and the catalyst therefore, by the vapor phase oxidation of the corresponding unsaturated aliphatic aldehydes with molecular oxygen, optionally in the presence of... | 03/17/1981 |
| 4170569 | Amphora aggregates and the process for their preparation Improved amphora aggregates having a substantially spherical shape, a void center and two cavities 180° apart in the external surface communicating to the void center are useful in diffusion-limited reactions and/or reactions in which heat transfer is cr... | 10/09/1979 |
