1
Dale W Wilborn, Christopher I Fitzgerald, Ronald R DiPadua, Gary D Stewart: Safe and automatic method for preparation of coke for removal from a coke vessel. Chevron U, Steven R Ellinwood, Alan W Klaassen, May 2, 2006: US07037408 (34 worldwide citation)

A safe, efficient and repetitively operable coke vessel decoking system is disclosed. In a preferred embodiment the closed system comprises a coker vessel pressure-tightly sealed to a top head system, which includes a closure housing with a laterally moveable horizontal closure member therein and a ...


2
Rahul S Bhaduri, John Stiksma, Roman Berezowsky: Process for separating and recovering base metals from used hydroprocessing catalyst. Chevron U, Steven R Ellinwood, November 23, 2010: US07837960 (23 worldwide citation)

A method is disclosed for separating and recovering base metals from a used hydroprocessing catalyst originating from Group VIB and Group VIII metals and containing at least a Group VB metal. In one embodiment, the method comprises the steps of: contacting the used catalyst with an ammonia leaching ...


3
Rahul S Bhaduri, John Stiksma, Roman Berezowsky: Process for separating and recovering base metals from used hydroprocessing catalyst. Chevron U, Steven R Ellinwood, December 7, 2010: US07846404 (22 worldwide citation)

A method is disclosed for separating and recovering base metals from a used hydroprocessing catalyst originating from Group VIB and Group VIII metals and containing at least a Group VB metal. In one embodiment, the used catalyst is contacted with an ammonia leaching solution to dissolve and separate ...


4
David M Bosi, David W Reeves: Insulated transition spool apparatus. Chevron U, Steven R Ellinwood, Alan W Klaassen, August 9, 2005: US06926807 (21 worldwide citation)

An insulated transition spool apparatus for mounting unheading devices to pressure vessels, such as coker vessels, and enabling repetitive operation thereof is disclosed. The apparatus comprises an outer housing, an inner housing that encloses an insulating space between the inner and outer housing, ...


5
Baha E Abulnaga, Jose Guitian, Sara Ouzts Lindsay: Process for recovering ultrafine solids from a hydrocarbon liquid. Chevron U, Steven R Ellinwood, March 9, 2010: US07674369 (13 worldwide citation)

A method for separating and recovering ultrafine particulate solid material from a suspension or slurry of the solid material and a hydrocarbon liquid by precipitation or flocculation of a heavy fraction of the hydrocarbon liquid with an effective amount of a precipitation or flocculation agent such ...


6
Anatoli Onopchenko: Alkylation of diphenylamine with polyisobutylene oligomers. Chevron U, Steven R Ellinwood, March 12, 2002: US06355839 (13 worldwide citation)

A process for preparation of alkylated diphenylamine antioxidant which comprises alkylating diphenylamine with a polyisobutylene in the presence of a clay catalyst, wherein the polyisobutylene has an average molecular weight in the range of 120 to 600 and wherein the polyisobutylene contains at leas ...


7
Cong Yan Chen: Molecular averaging of light and heavy hydrocarbons. Chevron U, Steven R Ellinwood, May 20, 2003: US06566568 (8 worldwide citation)

A process for preparing a paraffinic product stream in the gasoline, middle distillate fuel and lube ranges from a C


8
Seyi A Odueyungbo: Thermal treatment system for spent hydroprocessing catalyst. Chevron U, Steven R Ellinwood, June 25, 2013: US08470252 (7 worldwide citation)

A process to upgrade heavy oil and convert the heavy oil into lower boiling hydrocarbon products is provided. The process employs a catalyst slurry comprising catalyst particles with an average particle size ranging from 1 to 20 microns. In the upgrade process, spent slurry catalyst in heavy oil is ...


9
Jean Pierre Leopold Maes, Serge Stefan Lievens: Corrosion inhibitors and synergistic inhibitor combinations for the protection of light metals in heat-transfer fluids and engine coolants. Texaco, Texaco Development Corporation, Steven R Ellinwood, January 13, 2004: US06676848 (6 worldwide citation)

Corrosion protection of magnesium and aluminum alloys in engine coolants and heat-exchange fluids is achieved by the use of a select group of aliphatic and aromatic carboxylate acids or the alkaline metal, ammonium or amine salts thereof in combination with a fluoride and/or a fluorocarboxylic acid ...


10
Donald L Kuehne, Lisa P Hawker, David C Kramer: Method for removing calcium from crude oil. Chevron U, Alan Klaasen, Steven R Ellinwood, June 14, 2005: US06905593 (5 worldwide citation)

A calcium-containing hydrocarbonaceous material is treated with an aqueous mixture, comprising acetate ion and an alkaline material and having a pH in the range of 3.0 to 5.0, in order to extract at least a portion of the calcium from the hydrocarbonaceous material into the aqueous phase. Acetic aci ...