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Inventor

Dennis J. O'Rear

Inventor
Petaluma, CA, US

Overview

132→
Patents
1979–2019
Patent span
Chemistry
Primary field (CPC C)

Patents· 132 as inventor

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

C10Gprimary
C10GCracking hydrocarbon oils32%
C10LFuels not otherwise provided for13%
C07CAcyclic or carbocyclic compounds8%
Y02PClimate change mitigation technologies in the production or processing of goods7%
C10MLubricating compositions5%
B01JChemical or physical processes, e.g. catalysis or colloid chemistry4%
B01DSeparation4%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions4%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%
Y10TTechnical subjects covered by former us classification2%
PatentTitleYear
10,179,879Method for removing mercury from crude oil201910,179,880Process, method, and system for removing heavy metals from fluids201910,093,556Processes for removing metal particles from water20189,975,082Process, method, and system for removing mercury from fluids20189,926,775'Process for mercury removal'20189,902,909'Process, method, and system for removing mercury from pipelines'20189,598,648'Process, method, and system for removing heavy metals from fluids'20179,523,043'Process, method, and system for removing heavy metals from fluids'20169,447,675'In-situ method and system for removing heavy metals from produced fluids'20169,446,998'Paraffinic jet and diesel fuels and base oils from vegetable oils via a combination of hydrotreating, paraffin disproportionation and hydroisomerization'20169,447,674'In-situ method and system for removing heavy metals from produced fluids'20169,404,049'System for blending synthetic and natural crude oils derived from offshore produced fluids'20169,234,141'Process, method, and system for removing heavy metals from oily solids'20169,199,898'Process, method, and system for removing heavy metals from fluids'20159,181,491'Process and system for blending synthetic and natural crude oils and blends made thereby'20159,181,497'Process, method, and system for removing mercury from fluids'20159,169,445'Process, method, and system for removing heavy metals from oily solids'20159,028,680'Method and system for processing viscous liquid crude hydrocarbons'20159,023,123'Process, method, and system for removing mercury from fluids'20159,023,196'Process, method, and system for removing heavy metals from fluids'20158,992,769'Process, method, and system for removing heavy metals from fluids'20158,906,228'Process, method, and system for removing heavy metals from fluids'20148,840,691'Process, method, and system for removing mercury from fluids'20148,790,427'Process, method, and system for removing mercury from fluids'20148,753,500'Process and system for blending synthetic and natural crude oils derived from offshore produced fluids'20148,728,303'Process, method, and system for removing heavy metals from fluids'20148,721,873'Process, method, and system for removing heavy metals from fluids'20148,721,874'Process, method, and system for removing heavy metals from fluids'20148,685,686'Biofuels processes integrating photobioreactors with anaerobic digestion'20148,658,847'Processes and compositions for the incorporation of biologically-derived ethanol into gasoline'20148,523,959'Paraffinic biologically-derived distillate fuels with bio-oxygenates for improved lubricity and methods of making same'20138,361,172'Low melting point triglycerides for use in fuels'20138,324,413'Low melting point triglycerides for use in fuels'20128,076,122'Process for integrating conversion of hydrocarbonaceous assets and photobiofuels production using an absorption tower'20118,076,121'Integrated process for conversion of hydrocarbonaceous assets and photobiofuels production'20117,951,759'Fischer-Tropsch wax composition and method of transport'20117,951,287'Production of low sulfur, moderately aromatic distillate fuels by hydrocracking of combined Fischer-Tropsch and petroleum streams'20117,909,894'Systems and methods of improving diesel fuel performance in cold climates'20117,884,138'Process for making Fischer-Tropsch olefinic naphtha and hydrogenated distillates'20117,862,893'Paraffinic wax particle coated with a powder coating'20117,838,696'Hydroconversion process employing multi-metallic catalysts and method for making thereof'20107,785,378'Fischer-tropsch derived turbine fuel and process for making same'20107,754,066'Method of making base oil from transported wax'20107,754,065'Wax transport process'20107,744,742'Integration of molecular redistribution and hydroisomerization processes for the production of paraffinic base oil'20107,608,181'Distillate fuel blends from Fischer Tropsch products with improved seal swell properties'20097,501,019'Granular solid wax particles'20097,488,411'Fischer-tropsch wax composition and method of transport'20097,479,168'Stable low-sulfur diesel blend of an olefinic blend component, a low-sulfur blend component, and a sulfur-free antioxidant'20097,479,216'Fischer-Tropsch wax composition and method of transport'20097,431,821'High purity olefinic naphthas for the production of ethylene and propylene'20087,416,656'Process for removing aluminum contaminants from Fischer-Tropsch feed streams using dicarboxylic acid'20087,404,888'Reducing metal corrosion of hydrocarbons using acidic fischer-tropsch products'20087,402,187'Recovery of alcohols from Fischer-Tropsch naphtha and distillate fuels containing the same'20087,374,657'Production of low sulfur, moderately aromatic distillate fuels by hydrocracking of combined Fischer-Tropsch and petroleum streams'20087,354,462'Systems and methods of improving diesel fuel performance in cold climates'20087,320,748'Thermally stable jet prepared from highly paraffinic distillate fuel component and conventional distillate fuel component'20087,179,364'Production of stable olefinic Fischer-Tropsch fuels with minimum hydrogen consumption'20077,179,311'Stable olefinic, low sulfur diesel fuels'20077,150,821'High purity olefinic naphthas for the production of ethylene and propylene'20067,087,804'Use of waste nitrogen from air separation units for blanketing cargo and ballast tanks'20067,033,484'Thermally stable blends of highly paraffinic distillate fuel component with conventional distillate fuel component'20067,033,552'Upgrading Fischer-Tropsch and petroleum-derived naphthas and distillates'20067,018,525'Processes for producing lubricant base oils with optimized branching'20066,992,114'Control of CO2 emissions from a Fischer-Tropsch facility by use of multiple reactors'20066,992,113'Control of CO2 emissions from a fischer-tropsch facility by use of dual functional syngas conversion'20066,979,755'Olefin production from low sulfur hydrocarbon fractions'20056,933,323'Production of stable olefinic fischer tropsch fuels with minimum hydrogen consumption'20056,924,404'Inhibition of biological degradation of Fischer-Tropsch products'20056,900,366'Process for upgrading of Fischer-Tropsch products'20056,900,365'Process for converting heavy hydrocarbon feeds to high octane gasoline, BTX and other valuable aromatics'20056,896,707'Methods of adjusting the Wobbe Index of a fuel and compositions thereof'20056,890,423'Distillate fuel blends from Fischer Tropsch products with improved seal swell properties'20056,890,962'Gas-to-liquid CO2 reduction by use of H2 as a fuel'20056,881,760'Methods for monitoring solids content in Fischer-Tropsch products'20056,878,854'Temporary antioxidants for Fischer-Tropsch products'20056,872,752'High purity olefinic naphthas for the production of ethylene and propylene'20056,864,398'Conversion of syngas to distillate fuels'20056,863,802'Upgrading fischer-Tropsch and petroleum-derived naphthas and distillates'20056,849,664'Process for disposing biocide-containing cooling water'20056,846,404'Reducing CO2 levels in CO2-rich natural gases converted into liquid fuels'20056,846,402'Thermally stable jet prepared from highly paraffinic distillate fuel component and conventional distillate fuel component'20056,841,711'Process for making a lube base stock from a lower molecular weight feedstock in a catalytic distillation unit'20056,833,484'Inhibiting oxidation of a Fischer-Tropsch product using petroleum-derived products'20046,833,065'Lube base oils with improved yield'20046,824,574'Process for improving production of Fischer-Tropsch distillate fuels'20046,822,006'Methods of controlling the temperature of an exothermic reaction'20046,806,087'Use of microchannel reactors in combinatorial chemistry'20046,806,237'Lube base oils with improved stability'20046,800,101'Deactivatable biocides for hydrocarbonaceous products'20046,784,329'Olefin production from low sulfur hydrocarbon fractions'20046,776,897'Thermally stable blends of highly paraffinic distillate fuel component and conventional distillate fuel component'20046,773,578'Process for preparing lubes with high viscosity index values'20046,774,148'Process for conversion of LPG and CH4 to syngas and higher valued products'20046,768,035'Manufacture of high octane alkylate'20046,768,037'Process to upgrade fischer-tropsch products and form light olefins'20046,759,438'Use of oxygen analysis by GC-AED for control of fischer-tropsch process and product blending'20046,743,962'Preparation of high octane alkylate from Fischer-Tropsch olefins'20046,723,756'Aqueous separation of syngas components'20046,720,359'Scrubbing CO2 from a CO2-containing gas with an aqueous stream'20046,713,657'Condensation of olefins in fischer tropsch tail gas'20046,706,936'Process for making a lube base stock from a lower molecular weight feedstock'20046,703,429'Process for converting synthesis gas into hydrocarbonaceous products'20046,693,138'Reduction of carbon dioxide emissions from Fischer-Tropsch GTL facility by aromatics production'20046,686,511'Process for making a lube base stock from a lower molecular weight feedstock using at least two oligomerization zones'20046,682,711'Protection of Fischer-Tropsch catalysts from traces of sulfur'20046,667,347'Scrubbing CO2 from methane-containing gases using an aqueous stream'20036,635,171'Process for upgrading of Fischer-Tropsch products'20036,627,779'Lube base oils with improved yield'20036,626,122'Deactivatable biocides in ballast water'20036,620,091'Underwater scrubbing of CO2 from CO2-containing hydrocarbon resources'20036,569,909'Inhibition of biological degradation in fischer-tropsch products'20036,566,569'Conversion of refinery C5 paraffins into C4 and C6 paraffins'20036,562,230'Synthesis of narrow lube cuts from Fischer-Tropsch products'20036,541,524'Method for transporting Fischer-Tropsch products'20036,518,321'Method for transporting Fischer-Tropsch products'20036,455,595'Methods for optimizing fischer-tropsch synthesis'20026,441,263'Ethylene manufacture by use of molecular redistribution on feedstock C3-5 components'20026,398,946'Process for making a lube base stock from a lower molecular weight feedstock'20026,392,108'Inhibiting oxidation of a fischer-tropsch product using temporary antioxidants'20026,392,109'Synthesis of alkybenzenes and synlubes from Fischer-Tropsch products'20026,369,286'Conversion of syngas from Fischer-Tropsch products via olefin metathesis'20026,359,018'Process for upflow fixed-bed hydroprocessing of fischer-tropsch wax'20026,225,359'Process for conversion of natural gas and associated light hydrocarbons to salable products'20015,955,641'Method of making dimethylnaphthalenes'19994,502,945'Process for preparing olefins at high pressure'19854,436,614'Process for dewaxing and desulfurizing oils'19844,390,413'Hydrocarbon upgrading process'19834,347,121'Production of lubricating oils'19824,282,085'Petroleum distillate upgrading process'19814,251,348'Petroleum distillate upgrading process'19814,171,257'Petroleum distillate upgrading process'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1985Patents assigned to CHEVRON RES (7)· patent assignee history
1979–1983Based in Tiburon, CA, US· patent location history
1984–2019Based in Petaluma, CA, US· patent location history
2001–2019Patents assigned to CHEVRON USA INC (118)· patent assignee history
2011–2014Patents assigned to O'REAR DENNIS J (8)· patent assignee history
2011–2015Based in Penngrove, CA, US· patent location history
2014–2016Patents assigned to O'REAR DENNIS JOHN (14)· patent assignee history
2014–2016Patents assigned to COOPER RUSSELL EVAN (9)· patent assignee history
2014Based in Sonoma, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CHEVRON USA INC1182001–2019
O'REAR DENNIS JOHNself142014–2016
COOPER RUSSELL EVAN92014–2016
O'REAR DENNIS Jself82011–2014
CHEVRON RES71979–1985
Locations
LocationPatentsSpan
Petaluma, California, US1211984–2019
Penngrove, California, US52011–2015
Tiburon, California, US51979–1983
Sonoma, California, US12014