1
Edward C Hsu, John L Robbins: Catalyst pretreatment method. Exxon Research and Engineering Company, Jay Simon, December 3, 1991: US05070064 (62 worldwide citation)

An improved pretreatment method for preparing powdered catalysts with well controlled particle size distributions that are free of sub 1 micron particles comprising dispersion of the powdered catalyst in liquid comprised of either a) a hydrocarbon containing low levels of a surfactant or, b) a surfa ...


2
Edward C Hsu, Chester S Temple: Treated glass fibers and nonwoven sheet-like mat and method. PPG, Kenneth J Stachel, July 3, 1984: US04457785 (41 worldwide citation)

Treated glass fibers are provided that are more dispersible in aqueous media. The glass fibers are treated with a composition having a nonionic surfactant and a cationic quaternary ammonium salt surfactant. The composition may be added simultaneously or sequentially with the chopped glass fibers to ...


3
Min Chang, Constantine A Coulaloglou, Edward C Hsu: Combination gas disengaging downcomer-rejuvenation tube for in-situ slurry catalyst rejuvenation (LAW541). Exxon Research and Engineering Company, Jay Simon, September 22, 1998: US05811468 (37 worldwide citation)

A reversibly deactivated, particulate catalyst in a hydrocarbon synthesis slurry is rejuvenated by circulating the slurry from a slurry body through (i) a gas disengaging zone to remove gas bubbles from the slurry and increase its density, (iii) a downcomer which feeds the gas reduced, dense slurry ...


4
Edward C Hsu, Chester S Temple: Treated glass fibers and nonwoven sheet-like mat and method. PPG, Kenneth J Stachel, August 20, 1985: US04536446 (16 worldwide citation)

Treated glass fibers are provided that are more dispersible in aqueous media. The glass fibers are treated with a composition having a nonionic surfactant and a cationic quaternary ammonium salt surfactant. The composition may be added simultaneously or sequentially with the chopped glass fibers to ...


5
Edward C Hsu, Norman N Li, Taras Hucal: Electrodes for electrical coalescense of liquid emulsions. Exxon Research and Engineering Co, Edward M Corcoran, November 15, 1983: US04415426 (13 worldwide citation)

Improved electrodes for electrically coalescing water-in-oil emulsions in an AC electrical field, wherein the improvement comprises insulated electrodes having a dielectric constant of at least about 3 and a hydrophobic surface in contact with the emulsion. This invention results in faster coalescen ...


6
Edward C Hsu, Philip Merchant Jr, Dean L Smith Jr, Kevin P Kelly, Sylvia M Lacy: Process for the removal of solids from an oil. Exxon Chemical Patents, R L Graham, September 8, 1987: US04692237 (11 worldwide citation)

A process for removing suspended solids, particularly difficultly filterable inorganic solids, from an oil obtained as a refinery process fraction from steam and catalytic cracking units, shale oil retorting process fraction, or from coal conversion processes by adding to the oil an agglomerating ag ...


7
Min Chang, Constantine A Coulaloglou, Edward C Hsu, Larry E Pedrick: Slurry hydrocarbon synthesis with reduced catalyst attrition and deactivation. Exxon Research and Engineering Co, Jay Simon, May 18, 1999: US05905094 (10 worldwide citation)

A slurry hydrocarbon synthesis process with reduced catalyst attrition is achieved by injecting a synthesis gas comprising a mixture of H.sub.2 and CO up into the reactive slurry with a gas distribution grid having gas injectors horizontally arrayed across, and vertically extending through, an other ...


8
John P Wagner, Edward C Hsu: Methods and apparatus for electrostatically resolving emulsions. Exxon Research and Engineering Co, Robert S Salzman, Joseph J Dvorak, October 11, 1983: US04409078 (7 worldwide citation)

A new apparatus and methods are featured for electrostatically resolving emulsions. The apparatus comprises a flexible electrode carrying electrolytes, therein. Emulsions are resolved by passing current through the electrolyte at frequencies to or above 60 Hz.


9
Min Chang, Constantine A Coulaloglou, Edward C Hsu: Throat and cone gas injector and gas distribution grid for slurry reactor. Exxon Research and Engineering Co, Jay Simon, June 20, 2000: US06076810 (5 worldwide citation)

A gas distribution grid for a slurry reactor includes a plurality of gas injectors horizontally arrayed across, and extending through, an otherwise gas and liquid impervious plate. The injectors have a throat open at both ends, with a gas pressure reducing bore at one end which is the entrance end a ...


10
Min Chang, Constantine A Coulaloglou, Edward C Hsu: Throat and cone gas injector and gas distribution grid for slurry reactor (LAW646). Exxon Research and Engineering Company, Jay Simon, Jonathan N Provoost, March 13, 2001: US06199835 (5 worldwide citation)

A gas distribution grid for a slurry reactor includes a plurality of gas injectors horizontally arrayed across, and extending through, an otherwise gas and liquid impervious plate. The injectors have a throat open at both ends, with a gas pressure reducing bore at one end which is the entrance end a ...



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