May, Jr.; Douglas H. - US Patent Attorneys and Agents

Attorney: May, Jr.; Douglas H.

Number of patents: 38
Last date: June 12, 1984

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Number	Title	Issue Date
4453605	Drill bit and method of metallurgical and mechanical holding of cutters in a drill bit Disclosed is a method and apparatus for mechanically and metallurgically holding a cutter in a drill bit pocket. The method includes using powder metallurgy techniques in the formation of a drill bit member having a plurality of pockets configured to inhi...	06/12/1984
4220623	Fluidized catalytic cracking reactor A fluidized catalytic cracking unit wherein cyclone diplegs extend from the reactor vessel into the stripping vessel, for reducing the overall height of the unit. Valve means are provided at the lower end of the diplegs to prevent blow by of gas through t...	09/02/1980
4216076	Antifoulant additives for hydrocarbon streams A method for preventing fouling of equipment used in hydrocarbon processing is provided comprising adding to said hydrocarbon a polyalkyleneoxy sulfoxy salt represented by the formula: ##STR1## wherein R is a linear alkyl radical having from about 6 ...	08/05/1980
4194915	Foundry mold and core wash additives Additives useful in producing foundry mold and core washes comprise either: a mixture of 66.75% to 80.05% of an organophilic clay and 19.95% to 33.25% of an alcohol soluble, hexane insoluble thermoplastic resin skin-forming agent; or 7.15% to 15.25% of an...	03/25/1980
4191640	Dual pressure fractionation of hydrocarbons An improved dual fractionating process for hydrocarbons which employs a high pressure and a low pressure fractionating zone, light ends from the low pressure fractionating zone being introduced into the high pressure fractionating zone, heavy ends from th...	03/04/1980
4172842	Conversion of hydrogen and carbon monoxide into C₁ -C₄ range hydrocarbons A process for conversion of hydrogen and carbon monoxide into hydrocarbons in the presence of an ebullient bed of catalyst comprising reduced iron oxide promoted with potassium equivalent to 2-10 pounds potassium carbonate per 1000 pounds iron oxide catal...	10/30/1979
4138219	Apparatus for the regeneration of solid catalyst Apparatus for the regeneration of fluidized solid catalyst including a regeneration chamber adapted to hold a fluidized solids bed, oxygen containing gas source communicating with the chamber, a tangential inlet communicating with the regeneration chamber...	02/06/1979
4132658	Process for manufacturing aluminum complex soap thickened grease A process for manufacturing high dropping point aluminum complex soap thickened greases having selected consistency, water resistance, rheopectic properties, and antiwear properties....	01/02/1979
4128472	Solvent dewaxing process A solvent dewaxing process for removing wax from intermediate grade waxy petroleum distillate oils wherein a waxy oil stock, prediluted with 0-2 volumes dewaxing solvent is heated to a temperature in the range of about 110 to 130° F for melting all wax t...	12/05/1978
4125497	Method for manufacturing heat-cured molded articles from cement An improved method of manufacturing shaped objects from cement wherein cement is wetted with an aqueous solution of an acetone-formaldehyde resin, optionally including a water-soluble alcohol, the wet mixture molded to the desired shape and then cured pre...	11/14/1978
4115244	Solvent dewaxing process A process for dewaxing a waxy petroleum distillate charge stock, wherein a mixture of waxy oil and solvent, heated for dissolving all solid wax therein, is cooled to a first temperature about 40°-50° F (22° to 28° C) above a selected separation temper...	09/19/1978
4115243	Solvent dewaxing process A process for dewaxing heavy distillate and residual petroleum oil stocks wherein a waxy oil stock, prediluted with 1-2.5 volumes dewaxing solvent, is cooled to about the depressed cloud point, wherein the cooled, prediluted waxy oil stock is treated with...	09/19/1978
4115242	Solvent dewaxing process A process wherein a light waxy petroleum distillate stock, having a viscosity less than about 200 SUS at 100° F, is heated for melting any wax therein, wherein said heated waxy stock is incrementally mixed with a flowing stream of dewaxing solvent, havin...	09/19/1978
4115241	Solvent dewaxing process A solvent dewaxing process wherein a waxy oil charge, heated for melting wax therein, is cooled to a temperature about 5°-15° F below the cloud point, wherein the cooled waxy oil charge is mixed under conditions of good mixing with solvent having a temp...	09/19/1978
4069141	Process for recovering fuel oil from topped crude A topped crude oil is admixed with a hydrocarbon solvent and centrifuged in the presence of a brine carrier to produce a hydrocarbon solvent-fuel oil mixture and a brine-asphalt-fuel oil mixture, the latter mixture being recovered and admixed with a keton...	01/17/1978
4062759	Fluidized catalytic cracking regeneration process A process is described herein for regeneration of spent, coke contaminated fluidized cracking catalyst by burning coke therefrom with a molecular oxygen containing regeneration gas in a fluidized dense phase bed, and for burning substantially all carbon m...	12/13/1977
4060395	Fluidized cracking catalyst regeneration apparatus Apparatus for regeneration of spent, coke contaminated fluidized cracking catalyst by burning coke therefrom with a molecular oxygen containing regeneration gas in a fluidized dense phase bed, and for burning substantially all carbon monoxide to carbon di...	11/29/1977
4056486	Fluidized catalytic cracking regeneration process A process is described herein for regeneration of spent, coke contaminated fluidized cracking catalyst by burning coke therefrom with a molecular oxygen containing regeneration gas in a fluidized dense phase bed, and for burning substantially all carbon m...	11/01/1977
4051069	Fluidized catalytic cracking regeneration process A process is described herein for regeneration of spent, coke contaminated fluidized cracking catalyst by burning coke therefrom with a molecular oxygen containing regeneration gas in a fluidized dense phase bed, and for burning substantially all carbon m...	09/27/1977
4038212	Alkylation process for production of motor fuels A liquid phase alkylation process for production of alkylate useful as motor fuel, wherein low molecular weight isoparaffin hydrocarbons are alkylated with olefin hydrocarbons in the presence of a catalyst, comprising a mixture of a major portion of sulfu...	07/26/1977
4038038	Fluidized cracking catalyst regeneration apparatus Apparatus for regeneration of spent, coke contaminated fluidized cracking catalyst by burning coke therefrom with a molecular oxygen containing regeneration gas in a fluidized dense phase bed, and for burning substantially all carbon monoxide to carbon di...	07/26/1977
4035153	Fluidized cracking catalyst regeneration apparatus Apparatus for regeneration of spent, coke contaminated fluidized cracking catalyst by burning coke therefrom with a molecular oxygen containing regeneration gas in a fluidized dense phase bed, and for burning substantially all carbon monoxide to carbon di...	07/12/1977
4033899	Alkylation fluosulfonic-sulfuric acid catalyst recovery process with silica-alumina removal of fluoride compounds A process for removal of fluoride compounds from spent alkylation catalyst containing fluorosulfonic acid and sulfuric acid wherein said spent catalyst is hydrolyzed in the presence of water, at subatmospheric pressure in a vacuum digestion zone for conve...	07/05/1977
4033856	Fluidized catalytic cracking process with improved intermediate cycle gas oil stripping The present application discloses a fluidized catalytic cracking process wherein intermediate cycle gas oil is stripped of light cycle gas oil components employing reboiled intermediate cycle gas oil as stripping vapor for improving light cycle gas oil yi...	07/05/1977
4017263	Apparatus for sulfuric acid catalyzed alkylation process Improved alkylation reactor and reaction emulsion phase separation apparatus is described. Such apparatus is particularly useful in sulfuric acid catalyzed alkylation of isoparaffin with olefins for production of high octane value alkylate....	04/12/1977
4009094	Stabilizing pyrolysis naphtha Pyrolysis naphtha is contacted with a residuum hydrocarbon charge stock under process conditions suitable for delayed coking of said residuum hydrocarbon charge. Unstable olefinic and diolefinic components of said pyrolysis naphtha are reduced in the prod...	02/22/1977
4008178	Alkylation catalyst for production of motor fuels A liquid phase alkylation process for production of alkylate useful as motor fuel, wherein low molecular weight isoparaffin hydrocarbons are alkylated with olefin hydrocarbons in the presence of a catalyst comprising HFSO3 and H2 SO	02/15/1977
3990971	Metal cyanide complex compound disposal Foul water streams from refining processes such as fluidized catalytic cracking, containing about 1-100 ppm metal cyanide complex compounds, are contacted with flue gas from combustion of hydrocarbonaceous fuels at temperatures of 750° F and higher for e...	11/09/1976
3985678	Isoparaffin alkylation A strong acid catalyzed alkylation process wherein an isoparaffin is alkylated with an alkylating agent such as olefin hydrocarbon and alkyl sulfates, in the liquid phase, at a superatmospheric pressure and a temperature in the range of from below zero to...	10/12/1976
3976759	Process for removal of fluoride compounds from spent alkylation catalyst A process for removal of fluoride compounds from spent alkylation catalyst containing fluorosulfonic acid and sulfuric acid wherein hydrogen fluoride and fluorosulfonic acid, in the presence of water, are removed by vacuum distillation following which the...	08/24/1976
3970721	Alkylation process for production of motor fuels utilizing sulfuric acid catalyst with trifluoromethane sulfonic acid A liquid phase alkylation process for production of alkylate useful as motor fuel, wherein low molecular weight isoparaffin hydrocarbons are alkylated with olefin hydrocarbons in the presence of a catalyst, comprising a mixture of a major portion of sulfu...	07/20/1976
3966587	Method for controlling regenerator temperature in a fluidized cracking process An improved method is disclosed for controlling the temperature of the fluidized dense catalyst phase of the regeneration zone in a fluid catalytic cracking unit, wherein the coke laydown in the reaction zone is at a level such that the coke concentration...	06/29/1976
3963603	Fluid catalytic cracking A fluidized catalytic cracking process wherein the reaction zone comprises one or more riser reaction conduits discharging into a reaction vessel. Hydrocarbon vapors and catalyst discharging from the risers separate to form a dense phase fluidized catalys...	06/15/1976
3959117	Fluid catalytic cracking of hydrocarbons A transport type fluid catalytic cracking reactor comprising a riser conduit, a flow reversal means and a downcomer conduit, wherein the flow reversal means has a closable top such that a shorter or longer residence time of catalyst and oil vapor in the t...	05/25/1976
3957443	Fluid catalytic cracking of hydrocarbon A transport type fluid catalytic cracking reactor comprising a riser conduit, a flow reversal means and a downcomer conduit, wherein the flow reversal means has a closable top such that a shorter or longer residence time of catalyst and oil vapor in the t...	05/18/1976
3956417	Isoparaffin-olefin alkylation utilizing a continuous sulfuric acid phase in a tubular reaction zone A process for alkylating isoparaffin hydrocarbons with olefin hydrocarbons for production of high octane gasoline range alkylate wherein the alkylation reaction is performed in the presence of a sulfuric acid alkylation catalyst containing from about 0.00...	05/11/1976
3951857	Alkylation catalyst additive NN'N" tris (alkyl) phosphoric triamide alkylation aids of the formula ##EQU1## wherein R1, R2 and R3 are selected from straight or branched chain alkyl having 10 to 24 carbon atoms each, for use in strong acid catalyz...	04/20/1976
3932130	Inhibition of aluminum corrosion by sulfuric acid solutions Corrosion of aluminum metal by sulfuric acid solution is inhibited by addition of soluble fluoride compounds to the acid solutions. Such corrosion inhibition allows use of aluminum as a construction material in process units, particularly sulfuric acid al...	01/13/1976

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Attorney: May, Jr.; Douglas H.