| Patent Number |
Title Of Patent |
Date Issued |
| RE30623 |
Apparatus for selectively heating an individual food item in a refrigerated environment |
May 26, 1981 |
| A cabinet type enclosure, preferably in the form of a cart, which is adapted to be connected to a source of refrigeration for refrigerating a plurality of food items on a plurality of meal trays positioned in the enclosure has a plurality of thin, generally horizontal fixedly mounted |
| D267372 |
Multi-passenger aircraft seat |
December 28, 1982 |
|
| D250071 |
Multi-passenger aircraft seat |
October 31, 1978 |
|
| 4886929 |
Separation of para-xylene |
December 12, 1989 |
| The separation of the para-isomer of a dialkyl benzene from a mixture of the isomers thereof, especially p-xylene, by contacting the mixture at adsorption conditions with a type X or type Y zeolite adsorbent, ion exchanged with barium and potassium, and recovering the para-alkylbenzene |
| 4861459 |
Low pressure mixing process for atomizing fluids |
August 29, 1989 |
| The liquid feed injector as hereindescribed uses sequential stages of increased severity mixing to fully atomize a liquid portion of a combined liquid and gaseous stream. Sequential mixing consists of a first mild mixing that takes place in a mild mixing zone and blends the liquid and |
| 4859313 |
Method for reducing the temperature in a regeneration zone of a fluid catalytic cracking process |
August 22, 1989 |
| A method for operating a fluid catalytic cracking unit comprising a regeneration zone and a reaction zone with a relatively reduced temperature in the regeneration zone while processing a hydrocarbon feedstock having a 50 volume percent distillation temperature greater than about 500 |
| 4851574 |
Separation of citric acid from fermentation broth with a strongly basic anionic exchange resin a |
July 25, 1989 |
| Citric acid is separated from a fermentation broth by using an adsorbent comprising a strongly water-insoluble, macroreticular or gel, basis anionic exchange resin possessing quaternary amine functional groups, said a anionic exchange resin having a cross-linked acrylic or styrene resin |
| 4832921 |
Apparatus for regeneration of hydrocarbon conversion catalyst |
May 23, 1989 |
| A vessel for effecting multiple treatment steps needed to regenerate spent hydrocarbon conversion catalyst. Regeneration is accomplished in a moving bed of catalyst, where catalyst is passed through several treatment zones in the regeneration vessel. Catalyst is contacted with a hot |
| 4827077 |
Separation of indene from alkyl aromatics |
May 2, 1989 |
| The chromatographic adsorption separation of indene from petrochemical or synthetic feed mixtures with an Na- or K-exchanged X- or Y-zeolite and toluene, benzene, fluorobenzene or other halogen- or alkyl-substituted monocyclic aromatic desorbents. Selectivity of the separation is depende |
| 4827072 |
Dehydrogenation catalyst composition and hydrocarbon dehydrogenation process |
May 2, 1989 |
| A novel catalytic composite comprising a platinum group metal component; a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component and mixtures thereof; an optional alkali or alkaline earth metal component or mixtures thereof |
| 4827066 |
Dehydrogenation of dehydrogenatable hydrocarbons |
May 2, 1989 |
| A process for the catalytic dehydrogenation of a dehydrogenatable C.sub.2 -plus feed hydrocarbon which comprises the steps of: (a) passing a feed stream comprising the C.sub.2 -plus feed hydrocarbon into an isothermal dehydrogenation zone and through at least one bed of dehydrogenation |
| 4824818 |
Catalytic composite and process for mercaptan sweetening |
April 25, 1989 |
| This invention relates to a catalytic composite effective in oxidizing mercaptans contained in a sour petroleum distillate to disulfides. The catalytic composite comprises a metal chelate, an onium compound and optionally an alkali metal hydroxide. The onium compound may be selected |
| 4822762 |
Catalyst for the conversion of hydrocarbons |
April 18, 1989 |
| A nonacidic hydrocarbon conversion catalyst is disclosed which is prepared by incorporating potassium hydroxide into a composite of nonacidic L-zeolite and amorphous silica. A preparation procedure is also disclosed as well as a process for dehydrocyclizing C.sub.6 to C.sub.8 aliphatic |
| 4818368 |
Process for treating a temperature-sensitive hydrocarbanaceous stream containing a non-distillab |
April 4, 1989 |
| A process for treating a temperature-sensitive hydrocarbonaceous stream containing a non-distillable component to produce a hydrogenated distillable hydrocarbonaceous product while minimizing thermal degradation of the hydrocarbonaceous stream which process comprises the steps of: (a) |
| 4816607 |
Integrated etherification process with recycle post treatment |
March 28, 1989 |
| A multistep hydrocarbon conversion process for the production of ethers including methyl tertiary butyl ether (MTBE) from light paraffins and alcohols is disclosed. A mixture of C.sub.4 isoparaffins, normal paraffins, an etherification recycle and butane isomerization effluent enter |
| 4814064 |
Combination process for the conversion of a residual hydrocarbonaceous charge stock to produce m |
March 21, 1989 |
| A process for the conversion of an aromatic-rich, residual hydrocarbonaceous charge stock which possesses an aromatic hydrocarbon concentration greater than about 20 volume percent to selectively produce large quantities of high quality middle distillate while minimizing hydrogen con |
| 4812597 |
Dehydrogenation of dehydrogenatable hydrocarbons |
March 14, 1989 |
| Dehydrogenatable hydrocarbons may be subjected to a dehydrogenation reaction in which the hydrocarbons such as ethylbenzene are treated with a dehydrogenation catalyst comprising a modified iron catalyst in the presence of steam. The reaction mixture containing unconverted ethylbenze |
| 4810683 |
Regeneration of a platinum-containing zeolite |
March 7, 1989 |
| A method is described for the regeneration of a hydrocarbon conversion catalyst that has become deactivated by carbonaceous material deposition where the catalyst comprises a nonacid zeolite and a Group VIII metal component. The method comprises the steps of (1) removing a substantial |
| 4806700 |
Production of benzene from light hydrocarbons |
February 21, 1989 |
| A process is disclosed for the conversion of a light aliphatic hydrocarbon, such as propane, into benzene and optionally also naphthalene. The feed hydrocarbon is converted to aromatic hydrocarbons in a dehydrocyclodimerization zone. The aromatics, and other cyclic hydrocarbons, are |
| 4806695 |
Process for etherification of a dehydrogenation zone effluent |
February 21, 1989 |
| A combined process for the dehydrogenation of C.sub.3 -C.sub.5 paraffins in a first zone and the conversion of olefins in a second zone improves efficiency by directly charging all but the lightest components of the dehydrogenation zone effluent to the olefin conversion zone. This proces |
| 4806624 |
Dehydrogenation of dehydrogenatable hydrocarbons |
February 21, 1989 |
| A process for the catalytic dehydrogenation of a dehydrogenatable C.sub.2 -plus feed hydrocarbon which comprises the steps of: (a) passing a feed stream comprising the C.sub.2 -plus feed hydrocarbon into a dehydrogenation zone and through at least one bed of dehydrogenation catalyst |
| 4806616 |
N-N'-dialkylphenylenediamines as curing agents in polyurethane and polyurea manufacture by react |
February 21, 1989 |
| N,N'-dialkyl- and diaylphenylenediamines are effective curing agents in combination with other polyamines and polyols in reaction injection molding for a diverse class of polyisocyanates. The diamines provide a broad spectrum of cure times, as well as giving elastomers an interesting |
| 4806233 |
Method of separating a hot hydrocarbonaceous stream |
February 21, 1989 |
| A method of separating a hot hydrocarbonaceous stream having a temperature above the dew point of water and comprising hydrogen, vaporous hydrocarbonaceous compounds and an acidic inorganic compound which method comprises: (a) contacting the hot hydrocarbonaceous stream at a temperat |
| 4804803 |
Isomerization with once-through hydrogen |
February 14, 1989 |
| A process for the isomerization of C.sub.4 -C.sub.6 paraffins that uses a highly active catalyst to isomerize the feed in the presence of very little hydrogen. The process is characterized by good stability and high conversion with effluent hydrogen to hydrocarbon ratios of 0.05 or less. |
| 4801674 |
Secondary aromatic diamines as curing agents in polyurethane and polyurea manufacture by reactio |
January 31, 1989 |
| N,N'-disubstituted diamines are effective curing agents in combination with other polyamines and polyols in reaction injection molding for a diverse class of polyisocyanates. The diamines provide a broad spectrum of cure times, as well as giving elastomers an interesting and useful diver |
| 4798665 |
Combination process for the conversion of a distillate hydrocarbon to maximize middle distillate |
January 17, 1989 |
| A process for the conversion of an aromatic-rich, distillable gas oil charge stock which is essentially free from asphaltenic hydrocarbons and possesses an aromatic hydrocarbon concentration greater than about 20 volume percent to selectively produce large quantities of high quality |
| 4797233 |
Process for separating mono-, di- and triglycerides |
January 10, 1989 |
| The separation of monoglycerides from diglycerides and triglycerides is performed by an adsorptive chromatographic process in liquid phase using sodium, magnesium, lithium or potassium-exchanged X zeolites or potassium or sodium-exchanged Y zeolite, or potassium-exchanged L zeolite as th |
| 4797133 |
Process for recovery of butene-1 from mixed C4 hydrocarbons |
January 10, 1989 |
| A process is disclosed for the recovery of butene-1 from a mixed C.sub.4 feed stream which also contains isobutylene, butene-2, isobutane and normal butane. The C.sub.4 feed stream is passed through an etherification reaction zone wherein isobutylene is selectively converted to an ether. |
| 4795852 |
Process for the oligomerization of olefins and a catalyst thereof |
January 3, 1989 |
| An olefinic feedstock containing contaminants such as oxygenates may be oligomerized to a desired oligomer which contains a particular configuration. The process may be effected by utilizing a catalyst which comprises a porous support containing a catalytically effective amount of an |
| 4795851 |
Process for the oligomerization of olefins and a catalyst thereof |
January 3, 1989 |
| Olefinic feedstocks which contain catalyst contaminants or poisons such as sulfur-containing compounds may be oligomerized to a desired oligomer and configuration of the oligomer by utilizing a catalyst which is stable and will not deactivate due to the presence of the aforementioned poi |
| 4795846 |
Process for the dehydrocyclization of aliphatic hydrocarbons |
January 3, 1989 |
| An improved dehydrocyclization process for the selective conversion of light hydrocarbons to aromatics is presented. The activity of a catalyst containing nonacidic L-zeolite is greatly enhanced by the addition of water, water precursors, or mixtures thereof to the reaction zone during |
| 4795845 |
Regeneration of dehydrocyclodimerization catalyst |
January 3, 1989 |
| A process for catalytic dehydrocyclodimerization and regeneration of the catalyst. C.sub.2 to C.sub.5 aliphatic hydrocarbons are reacted to produce aromatics, using a catalyst of a composition especially adapted to minimize deposition of coke on the catalyst. The catalyst is comprised of |
| 4795844 |
Process for conversion of light olefins to LPG and aromatics |
January 3, 1989 |
| A process is disclosed for the catalytic conversion of an olefin-containing C.sub.3 and/or C.sub.4 feed (1) into aromatic hydrocarbons (22) and C.sub.3 and/or C.sub.4 paraffins (25,26). The process may result in a net consumption of hydrogen and operates at relatively mild temperature |
| 4795843 |
Conversion of methane into larger organic hydrocarbons |
January 3, 1989 |
| Organic hydrocarbons which comprise useful compounds may be obtained in a two-step process utilizing methane as a feedstock. The desired compounds are prepared by treating said methane with a halogenating agent such as chlorine, followed by contacting the methyl halide with a conversion |
| 4795728 |
Motor fuel alkylation process utilizing a surfactant containing catalyst to reduce hydrofluoric |
January 3, 1989 |
| A novel hydrofluoric acid-catalyzed motor fuel alkylation process and catalyst is disclosed which incorporates from 0.5 to 5 vol. % of a cationic or anionic surfactant component in an HF containing acid alkylation catalyst to enable the process to be operated at an olefin-to-acid vol |
| 4795550 |
Removal of trace olefins from aromatic hydrocarbons |
January 3, 1989 |
| This invention presents a novel treating process for the removal of trace quantities of olefinic impurities from a hydrocarbon process stream. Specifically, this process operates at liquid phase conditions treating hydrocarbon streams comprising substantially aromatics and naphthenes |
| 4795545 |
Process for pretreatment of light hydrocarbons to remove sulfur, water, and oxygen-containing co |
January 3, 1989 |
| A pretreatment process for removal of contaminants from a light hydrocarbon feedstock is presented. The feedstock is passed to a first adsorption zone containing a molecular sieve and thereafter passed to a second adsorption zone containing activated alumina. The process produces a hydro |
| 4794202 |
Process for separating halogen substituted toluene isomers |
December 27, 1988 |
| A process for separating the para and ortho isomers of a halogen substituted toluene from a feed mixture of the same. Separation of the isomers is effected by selective adsorption and desorption and is susceptible to various flow schemes for performing continuous adsorptive separatio |
| 4792390 |
Combination process for the conversion of a distillate hydrocarbon to produce middle distillate |
December 20, 1988 |
| A process for the conversion of an aromatic-rich, distillable gas oil charge stock which is essentially free from asphaltenic hydrocarbons and possesses an aromatic hydrocarbon concentration greater than about 20 volume percent to selectively produce large quantities of high quality |
| 4791087 |
Trimetallic reforming catalyst |
December 13, 1988 |
| A novel trimetallic catalytic composite, a method of manufacture and process use thereof is dislcosed. The composite comprises a refractory support having a nominal diameter of at least 650 microns and having deposited thereon a uniformly dispersed platinum component, a uniformly dis |
| 4788371 |
Catalytic oxidative steam dehydrogenation process |
November 29, 1988 |
| A novel process is disclosed for the steam dehydrogenation of dehydrogenatable hydrocarbons in the vapor phase in conjunction with oxidative reheating of the intermediate products. The process utilizes a single catalyst to perform both the selective oxidation and steam dehydrogenatio |
| 4786625 |
Dehydrogenation catalyst compositon |
November 22, 1988 |
| A novel catalytic composite comprising a platinum group metal component; a modifier metal component selected from the group consisting of a tin component, germanium component, rhenium component and mixtures thereof; an optional alkali or alkaline earth metal component or mixtures thereof |
| 4784807 |
Process for separating triglylcerides by degree of unsaturation |
November 15, 1988 |
| The separation of polyunsaturated triglycerides from monounsaturated triglycerides is performed by an adsortive chromatographic process in liquid phase using hydrogen-, copper-, or potassium-exchanged omega zeollites or carbon as the adsorbent. A ketone, toluene or ketone/n-aliphatic |
| 4783575 |
Isomerization with cyclic hydrocarbon conversion |
November 8, 1988 |
| A C.sub.4 -C.sub.6 feed to an isomerization zone containing substantial amounts of cyclic hydrocarbons is contacted with a high chloride, platinum alumina catalyst to simultaneously open cyclic hydrocarbon rings and isomerize paraffins to more highly branched paraffins. The process can |
| 4783568 |
Xylene producing process having staged catalytic conversion of ethylbenzene |
November 8, 1988 |
| A process is disclosed for the production of a desired xylene isomer, preferably paraxylene, and high quality benzene. The desired isomer (11) is recovered from the feed (1) and recycle (3) streams in a xylene separation zone (2). The raffinate (5) from the separation zone is passed |
| 4783567 |
HF alkylation process |
November 8, 1988 |
| A novel liquid acid catalyzed alkylation process is disclosed which incorporates a fixed bed of contact material to improve the alkylation reaction zone efficiency. The fixed bed of contact material also allows the process to be efficiently operated at lower acid to olefin mole/mole |
| 4783566 |
Hydrocarbon conversion process |
November 8, 1988 |
| A hydrocarbon conversion process is disclosed which extends the useful life of a regenerable zeolite-containing hydrocarbon conversion catalyst. In one aspect of this process, a hydrocarbon feed containing fluorides is passed through a fluoride removal system which reduces the fluoride |
| 4783517 |
Polyureas as coatings |
November 8, 1988 |
| The polyureas resulting from curing polyfunctional isocyanates having at least three isocyanate groups with a N,N'-dialkylmethylenedianiline are broadly useful as coatings on the surface of objects made of metal, wood, glass, or plastic. The diamine N,N'-di(2-butyl)4,4'-methylenedianilin |
| 4778942 |
Process for the dehydrogenation of hydrocarbons |
October 18, 1988 |
| A process for the dehydrogenation of a dehydrogenatable hydrocarbon feedstock having small quantities of higher boiling range hydrocarbons which comprises: (a) introducing the dehydrogenatable hydrocarbon feedstock into a fractionation zone having at least a portion of reflux to a fr |
| 4778941 |
Eduction of intermediate effluent in dehydrogenation process having oxidative reheat |
October 18, 1988 |
| More efficient mixing, more complete hydrogen consumption, and more thorough cooling of a dehydrogenation zone effluent is obtained by educting a portion of the dehydrogenation effluent from the reaction and externally cooling the withdrawn effluent in a heat exchanger and externally |
