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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 |
| 4435278 | Hydroprocessing with a catalyst having bimodal pore distribution A process for hydroprocessing a hydrocarbonaceous feedstock containing constituents boiling above 350° C. comprises contacting said feedstock with hydrogen under hydroprocessing conditions with a catalyst composition comprising a rigidly interconnected p... | 03/06/1984 |
| 4390413 | Hydrocarbon upgrading process A petroleum distillate feed is upgraded and an olefinic product is produced by contacting the feed with ZSM-5-type zeolite at (1) a temperature in the 500° F.-800° F. range; (2) a pressure below about 13 atmospheres gauge; and (3) an LHSV in the 0.1-15 ... | 06/28/1983 |
| 4354924 | Dual component chromia silicate cracking catalyst A process for catalytically cracking a hydrocarbonaceous feedstock employing a dual component catalyst. The process is conducted under catalytic cracking conditions, preferably in a single stage, in the absence of added hydrogen. The dual component cataly... | 10/19/1982 |
| 4347121 | Production of lubricating oils A process is provided for preparing stable lubricant oil stocks, comprising hydrocracking a hydrocarbonaceous feed to produce a hydrocrackate having a total nitrogen content of less than about 10 ppm by weight, followed by dewaxing and stabilizing the hyd... | 08/31/1982 |
| 4340465 | Dual component crystalline silicate cracking catalyst A process for catalytically cracking a hydrocarbonaceous feedstock employing a dual component catalyst. The process is conducted under catalytic cracking conditions, preferably in a single stage, in the absence of added hydrogen. The dual component cataly... | 07/20/1982 |
| 4331531 | Three-stage coal liquefaction process Disclosed is a three-stage process for liquefying coal. In the process, subdivided coal is slurried with a hydrogen-lean hydrogen-donor solvent and passed through a dissolving zone at a temperature in the range 400° to 480° C. and at a space velocity in... | 05/25/1982 |
| 4328130 | Shaped channeled catalyst A shaped catalyst and methods of use are provided. The catalyst has substantially the shape of a cylinder having a plurality of longitudinal channels extending radially from the circumference of the cylinder and defining protrusions therebetween, said pro... | 05/04/1982 |
| 4325801 | Three-stage coal liquefaction process Disclosed is a three-stage process for liquefying coal in which a coal-solvent slurry is sequentially passed through a first dissolving stage and two catalytic reaction stages in series. The first catalytic reaction stage contains a catalyst having a sele... | 04/20/1982 |
| 4325800 | Two-stage coal liquefaction process with interstage guard bed An improved coal liquefaction process is disclosed wherein subdivided coal is substantially dissolved in a solvent in the presence of added hydrogen, thereby forming a mixture of dissolved coal, solvent and insoluble solids, and said mixture is passed thr... | 04/20/1982 |
| 4260475 | Hydrocarbon cracking process A process for cracking hydrocarbons is disclosed in which catalyst particles are regenerated in two stages, the first employing an entrained bed of upwardly moving catalyst in cocurrent flow with regeneration gas, and the second employing a fluidized bed ... | 04/07/1981 |
| 4259213 | High copper level comulled and impregnated sulfur sorbent A porous sulfur sorbent is disclosed which has principal use in desulfurizing reformer feedstreams. The sorbent is prepared by peptizing alumina with acid and mulling the peptized alumina with a copper compound to form an extrudable dough. The dough is ex... | 03/31/1981 |
| 4259176 | Restricting silica content of catalyst inventory to prevent alumina poisoning for SOx control Removal of sulfur oxides from cracking catalyst regenerator flue gas using particulate alumina is enhanced by employing a zeolitic cracking catalyst containing little or no silica in the catalyst matrix.... | 03/31/1981 |
| 4255248 | Two-stage coal liquefaction process with process-derived solvent having a low heptane-insolubiles content Disclosed is a two-stage process for the production of clean liquid hydrocarbons from coal. In the process subdivided coal is dissolved in a process derived solvent at a temperature in the range 425° C.-480° C. The dissolver effluent is passed through a... | 03/10/1981 |
| 4253404 | Natural draft combustion zone optimizing method and apparatus Control method and apparatus for optimizing the operation of a natural draft combustion zone through which a conduit containing a process fluid to be heated passes, by decreasing the supply of combustion air until one or more of the following predetermine... | 03/03/1981 |
| 4252635 | Sulfur oxides control in cracking catalyst regeneration In removing sulfur oxides from flue gas in a cracking catalyst regenerator in the presence of a silica-containing particulate catalyst by reacting the sulfur oxides with alumina in a particulate solid other than the catalyst, activity loss in the alumina ... | 02/24/1981 |
| 4251348 | Petroleum distillate upgrading process A petroleum distillate feed is upgraded and a substantial C3 -C4 olefin product fraction produced by contacting the feed with ZSM-5 type zeolite at (1) a temperature in the 500°-800° F. range, (2) a pressure below about 13 atmosphe... | 02/17/1981 |
| 4242236 | 65-130 Angstrom mean radius silica-alumina catalyst support A catalyst support comprised of alumina and silica is disclosed having a mean pore radius ranging from about 65 to about 130 Angstroms, a total pore volume from about 0.75 to about 1.3 ml/g and a total surface area ranging from about 150 to 300 m2 | 12/30/1980 |
| 4238463 | Method for desulfurizing gases with iron oxide Removal of hydrogen sulfide from gases using iron oxide-containing solids is improved by introducing a liquid containing a primary or secondary amine into the iron oxide-containing solids.... | 12/09/1980 |
