JAIME LOPEZ
Pilots at Dover Cir, Benicia, CA

6110879, Aug 29, 2000

Oct 15, 1998

9/173403

David C. Kramer - San Anselmo CA
John A. Zakarian - Kensington CA
Jay M. Peterson - Vacaville CA
Russell R. Krug - Novato CA
Jaime Lopez - Benicia CA
Stephen K. Lee - Oakland CA
Mark L. Sztenderowicz - San Francisco CA
Joseph M. Pudlak - Vallejo CA

Chevron U.S.A. Inc. - San Francais CA

C10M14514

508469

The present invention provides for a lubricating composition including: a hydrocracker-derived, highly naphthenic, low viscosity index mineral oil; from about 2 wt. % to about 14 wt. % of at least one polymethacrylate polymer; and from about 2 wt. % to about 14 wt. % of a performance additive package. The hydrocracker-derived, highly naphthenic, low viscosity index mineral oil is prepared by: (1) passing a first bottoms portion including not more than about 67 wt. % of a fuels hydrocracker bottoms recycle stream to a dewaxing zone; and (2) passing a second bottoms portion including at least about 33 wt. % of the recycle stream back to the fuels hydrocracker for additional processing; and where the recycle stream has a viscosity at 100. degree. C. of less than about 4. 0; (3) contacting the first bottoms portion with a dewaxing catalyst under catalytic dewaxing conditions, where at least a portion of the hydrocracker bottoms is substantially dewaxed; and (4) contacting at least a portion of the substantially dewaxed hydrocracker bottoms with a hydrofinishing catalyst under hydrofinishing conditions, thereby producing a hydrofinished, dewaxed hydrocracker bottoms; and removing from the hydrofinished, dewaxed hydrocracker bottoms at least one light fraction including diesel or jet fuel range material, thereby leaving a heavy fraction including the hydrocracker-derived, highly naphthenic, viscosity index mineral oil having a naphthenes content of at least about 33 wt. %.

4857496, Aug 15, 1989

Dec 15, 1986

6/941456

Jaime Lopez - Benicia CA
Eugene A. Pasek - Export PA

Chevron Research Company - San Francisco CA

B01J 27147

502220

A process for the preparation of a dispersed Group VIB metal sulfide hydrocarbon oil hydroprocessing catalyst comprising reacting aqueous ammonia and a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, to form water soluble compounds such as aqueous ammonium molybdates or tungstates. The aqueous ammonium molybdates or tungstates are sulfided at a relatively low temperature with hydrogen sulfide without feed oil. The slurry stream is then passed through a separator and ammonia is flashed and separated from the system, leaving a separator residue slurry. The separator residue slurry is then mixed with feed oil, hydrogen and hydrogen sulfide and sulfided at a relatively high temperature to produce a dispersed molybdenum sulfide or tungsten sulfide catalyst of high hydroprocessing activity. The catalyst slurry and feed oil can then be passed to a hydroprocessing reactor.

4762812, Aug 9, 1988

Aug 21, 1985

6/767821

Jaime Lopez - Benicia CA
Eugene A. Pasek - Export PA
Anthony V. Cugini - Pittsburgh PA

Chevron Research Company - San Francisco CA

B01J 3866

502 26

A process for the recovery of a spent molybdenum catalyst from a hydroprocess for the upgrading of a nickel and vanadium containing hydrocarbonaceous mineral oil. The nickel and vanadium contaminated molybdenum catalyst is oxidized to convert the metals to oxides. Aqueous ammonia is added to preferentially dissolve molybdenum from nickel and vanadium. An amount of ammonia is used in excess of the amount required to produce an active catalyst for recycle and the excess ammonia is removed prior to recycle of the catalyst. The selectively of the separation of molybdenum from nickel and vanadium is improved by adding a reducing agent before or during the ammonia dissolving step. Hydrazine is a suitable reducing agent. The recovered molybdenum is sulfided and recycled.

4710486, Dec 1, 1987

Aug 21, 1985

6/767768

Jaime Lopez - Benicia CA
Eugene A. Pasek - Export PA

Chevron Research Company - San Francisco CA

B01J 27047, B01J 27051

502219

A process for the preparation of a dispersed Group VIB metal sulfide hydrocarbon oil hydroprocessing catalyst comprising reacting aqueous ammonia and a Group VIB metal compound, such as molybdenum oxide or tungsten oxide, to form a water soluble oxygen-containing compound such as aqueous ammonium molybdate or tungstate. The aqueous ammonium molybdate or tungstate is sulfided in at least three sulfiding steps of increasing temperature including a low temperature sulfiding step, an intermediate temperature sulfiding step and a high temperature sulfiding step. Some of the oxygen associated with said Group VIB metal is replaced by sulfur in each of the sulfiding steps. It has been found the maximum total level of replacement of oxygen by sulfur achieved in the intermediate temperature step is particularly critical to catalyst activity. In accordance with this invention, in the intermediate temperature sulfiding step the maximum total stoichiometric level of replacement by sulfur of oxygen associated with the Group VIB metal reaches a level of 50 to 95 percent. Additional replacement of oxygen with sulfur occurs in the high temperature sulfiding step.

5484755, Jan 16, 1996

Aug 22, 1994

8/294182

Jaime Lopez - Benicia CA

B01J 27051

502219

High activity slurry catalysts for hydroprocessing heavy hydrocarbon oils are produced from Group VIB metal compounds by sulfiding an aqueous mixture of the metal compound with from greater than about 8 to about 14 SCF of hydrogen sulfide per pound of Group VIB metal.

5162282, Nov 10, 1992

Apr 5, 1991

7/682861

Jaime Lopez - Benicia CA
Eugene A. Pasek - Monroeville PA

Chevron Research and Technology Company - San Francisco CA

B01J 27051, B01J 27047, C10G 4504

502220

A process for the preparation of a dispersed Group VI-B metal sulfide hydrocarbon oil hydroprocessing catalyst comprising reacting aqueous ammonia and a Group VI-B metal compound, such as molybdenum oxide or tungsten oxide, to form water soluble compounds such as aqueous ammonium molybdates or tungstates. The aqueous ammonium molybdates or tungstates are sulfided at a relatively low temperature with hydrogen sulfide without feed oil, and wherein the mole ratio of the sulfiding agent to metal salts is greater than 2, to produce molybdenum or tungsten sulfide catalysts of high hydroprocessing activity. The catalyst slurry and feed oil can then be passed to a hydroprocessing reactor or can be further sulfided in additional steps of increasing temperature.

2009015, Jun 25, 2009

Dec 18, 2008

12/338388

Jaime Lopez - Benicia CA, US
Janine Lichtenberger - Berkeley CA, US

C10L 1/08, C10G 47/02

208 15, 208112

A process of upgrading a highly aromatic hydrocarbon feedstream comprising(a) contacting a highly aromatic hydrocarbon feedstream, having a normal paraffin content of greater than at least about 5 wt %, wherein a major portion of the feedstream has a boiling range of from about 300° F. to about 800° F., under catalytic conditions with a catalyst system, containing a hydrotreating catalyst, a hydrogenation/hydrocracking catalyst, and a dewaxing catalyst in a single stage reactor system, wherein the active metals in the hydrogenation/hydrocracking catalyst comprises from about 5%-30% by weight of nickel and from about 5%-30% by weight tungsten; and(b) wherein at least a portion of said highly aromatic hydrocarbon feedstream is converted to a product stream having a boiling range within jet or diesel boiling ranges.

2009010, Apr 23, 2009

Oct 22, 2007

11/876494

Jaime Lopez - Benicia CA, US
Janine Lichtenberger - Berkeley CA, US

CHEVRON U.S.A. INC. - San Ramon CA

C10L 1/00

44300

A process of upgrading a highly aromatic hydrocarbon feedstream comprising (a) contacting a highly aromatic hydrocarbon feedstream, wherein a major portion of the feedstream has a boiling range of from about 300° F. to about 800° F., under catalytic conditions with a catalyst system, containing a hydrotreating catalyst and a hydrogenation/hydrocracking catalyst in a single stage reactor system, wherein the active metals in the hydrogenation/hydrocracking catalyst comprises from about 5%-30% by weight of nickel and from about 5%-30% by-weight tungsten; and (b) wherein at least a portion of said highly aromatic hydrocarbon feedstream is converted to a product stream having a boiling range within jet or diesel boiling ranges.

5164075, Nov 17, 1992

Jul 5, 1990

7/548157

Jaime Lopez - Benicia CA

Chevron Research & Technology Company - San Francisco CA

C10G 4508, C10G 4516

208215

High activity slurry catalysts for hydroprocessing heavy hydrocarbon oils are produced from Group VIB metal compounds by sulfiding an aqueous mixture of the metal compound with from greater than about 8 to about 14 SCF of hydrogen sulfide per pound of Group VIB metal.

8361309, Jan 29, 2013

Dec 16, 2009

12/639344

Jaime Lopez - Benicia CA, US
Janine Lichtenberger - Richmond CA, US
Ronald K. Meeker - Clayton CA, US
Paul A. Allinson - Danville CA, US
William J. Cannella - Orinda CA, US

Chevron U.S.A. Inc. - San Ramon CA

C10L 1/08

208 15, 44300, 44385, 44388, 44418

A diesel fuel composition comprising a (1) sulfur content of less than 10 ppm; (2) a flash point of greater than 50° C. ; (3) a UV absorbance, A, of less than 1. 5 as determined by the formula comprising +10().