Inventor

Arthur J. Dahlberg

Inventor

Benicia, CA, US

Overview

1981–2007

Patent span

Chemistry

Primary field (CPC C)

Patents· 25 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

C10Gprimary

C10GCracking hydrocarbon oils78%

C10LFuels not otherwise provided for9%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests9%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%

PatentTitleYear

7,238,277'High conversion hydroprocessing'2007 6,797,154'Hydrocracking process for the production of high quality distillates from heavy gas oils'2004 6,787,025'Process for the production of high quality middle distillates from mild hydrocrackers and vacuum gas oil hydrotreaters in combination with external feeds in the middle distillate boiling range'2004 6,783,660'Multiple hydroprocessing reactors with intermediate flash zones'2004 6,723,889'Process for producing a highly paraffinic diesel fuel having a high iso-paraffin to normal paraffin mole ratio'2004 6,702,935'Hydrocracking process to maximize diesel with improved aromatic saturation'2004 6,630,066'Hydrocracking and hydrotreating separate refinery streams'2003 6,458,265'Diesel fuel having a very high iso-paraffin to normal paraffin mole ratio'2002 6,224,747'Hydrocracking and hydrotreating'2001 6,204,426'Process for producing a highly paraffinic diesel fuel having a high iso-paraffin to normal paraffin mole ratio'2001 5,393,410'Hydrocarbon conversion processes and catalysts used therein'1995 4,564,439'Two-stage, close-coupled thermal catalytic hydroconversion process'1986 4,422,922'Coal liquefaction and hydroprocessing of petroleum oils'1983 4,389,301'Two-step hydroprocessing of heavy hydrocarbonaceous oils'1983 4,379,744'Coal liquefaction process'1983 4,376,037'Hydroprocessing of heavy hydrocarbonaceous oils'1983 4,358,359'Two-stage coal liquefaction process with process-derived solvent having a low heptane-insolubles content'1982 4,354,920'Coal liquefaction process'1982 4,350,582'Two-stage coal liquefaction process with process-derived solvent'1982 4,330,391'Coal liquefaction process'1982 4,330,390'Two-stage coal liquefaction process with petroleum-derived coal solvents'1982 4,330,389'Coal liquefaction process'1982 4,330,393'Two-stage coal liquefaction process with petroleum-derived coal solvents'1982 4,264,429'Two-stage coal liquefaction process with process-derived solvent'1981 4,255,248'Two-stage coal liquefaction process with process-derived solvent having a low heptane-insolubiles content'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1986Patents assigned to CHEVRON RES (14)· patent assignee history

1981–1982Based in Pinole, CA, US· patent location history

1982–1986Based in Rodeo, CA, US· patent location history

1995Patents assigned to CHEVRON RES & TECH (1)· patent assignee history

1995–2007Based in Benicia, CA, US· patent location history

2001–2007Patents assigned to CHEVRON USA INC (10)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CHEVRON RES	14	1981–1986
CHEVRON USA INC	10	2001–2007
CHEVRON RES & TECH	1	1995

Locations

Location	Patents	Span
Benicia, California, US	11	1995–2007
Rodeo, California, US	7	1982–1986
Pinole, California, US	7	1981–1982