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Inventor

David Y. Chung

Inventor
Bellaire, TX, US

Overview

61→
Patents
1987–2021
Patent span
Chemistry
Primary field (CPC C)

Patents· 61 as inventor

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

C08Fprimary
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds37%
C10MLubricating compositions15%
C10NIndexing scheme associated with subclass c10m relating to lubricating compositions12%
C08LCompositions of macromolecular compounds11%
C10LFuels not otherwise provided for8%
B29CShaping or joining of plastics4%
C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients4%
B60CVehicle tyres3%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%
B29BPreparation or pretreatment of the material to be shaped1%
PatentTitleYear
10,885,371Method and apparatus for verifying an object image in a captured optical image20218,354,473'Halogenation processes'20138,283,407'Processing aids for elastomeric compositions'20128,247,496'Processing aids for elastomeric compositions'20128,178,465'Polydispersity-controlled isoolefin polymerization with polymorphogenates'20127,960,454'Processing aids for elastomeric compositions'20117,910,662'Halogenation processes'20117,893,176'Polydispersity-controlled isoolefin polymerization with polymorphogenates'20117,781,547'Reactor systems for use in polymerization processes'20107,767,743'Processable branched isoolefin-alkylstyrene elastomers'20107,723,447'Polymerization processes'20107,659,355'Elastomeric compositions, air barriers, and processes for the making the same'20107,638,573'Butyl nanocomposite via low Mw elastomer pre-blend'20097,585,914'Thermoplastic elastomer compositions and methods for making the same'20097,582,715'Polymers substantially free of long chain branching'20097,491,764'Low permeability nanocomposites'20097,491,773'Halogenated polymers with new sequence distributions'20097,485,677'Low permeability nanocomposites'20097,425,601'Polymers with new sequence distributions'20087,414,101'Polymerization processes'20087,402,636'Method and apparatus for decreasing polymer deposition'20087,332,554'Polymers with new sequence distributions'20087,332,555'Polymers with new sequence distributions'20087,329,697'Elastomeric compositions'20087,241,831'Elastomeric compositions'20077,232,872'Polymerization processes'20076,939,933'Process for polymerizing cationically polymerizable monomers'20056,858,690'Process for polymerizing cationically polymerizable monomers'20056,590,039'Silane grafted copolymers of an alpha-olefin and a vinyl aromatic monomer'20036,448,322'Stabilization of halogenated rubber'20026,380,316'Polyisobutylene copolymers having reactive silyl grafts'20026,274,689'Random isomonoolefin/allyl styrene copolymers and functionalized derivatives thereof'20016,177,519'Silane grafted copolymers of an isomonoolefin and a vinyl aromatic monomer'20015,744,429'Mixed ethylene alpha olefin copolymer multifunctional viscosity modifiers useful in lube oil compositions'19985,670,582'Process for halogenation of isomonoolefin/para-alkylstyrene copolymers'19975,651,927'Multiple reaction process in melt processing equipment'19975,565,161'Process for producing a functionalized thermoplastic polymer'19965,552,096'Multiple reaction process in melt processing equipment'19965,427,702'Mixed ethylene alpha olefin copolymer multifunctional viscosity modifiers useful in lube oil compositions'19955,424,367'Multiple reaction process in melt processing equipment'19955,401,427'Viscosity index improver'19955,356,551'Multifunctional viscosity index improver for lubricating oil compositions'19945,348,673'Multifunctional viscosity index improver derived from amido-amine and degraded ethylene copolymer exhibiting improved low temperature viscometric properties'19945,328,624'Stabilized grafted ethylene copolymer additive useful in oil compositions'19945,312,556'Multifunctional viscosity index improver derived from polyamine containing one primary amine group and at least one tertiary amine group and degraded ethylene copolymer'19945,290,461'Multifunctional viscosity index improver derived from amido-amine and degraded ethylene copolymer exhibiting improved low temperature viscometric properties (PT-768)'19945,290,868'Multifunctional viscosity index improver derived from polyamine containing one primary amine group and at least one secondary amine group and degraded ethylene copolymer'19945,262,075'Multifunctional viscosity index improver exhibitng improved low temperature viscometric properties'19935,252,238'Multifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric properties'19935,244,590'Viscosity index improver'19935,210,146'Multifunctional viscosity index improver derived from polyamine containing one primary amino group and at least one secondary amino group exhibiting improved low temperature viscometric properties'19935,167,848'Grafted viscosity index improver'19925,118,433'Multifunctional viscosity index improver derived from amido-amine and degraded ethylene copolymer exhibiting improved low temperature viscometric properties'19925,068,047'Visosity index improver'19915,053,151'Multifunctional viscosity index improver derived from amido-amine exhibiting improved low temperature viscometric properties'19915,035,821'End-capped multifunctional viscosity index improver'19914,803,003'Ethylene copolymer viscosity index improver dispersant additive useful in oil compositions'19894,749,505'Olefin polymer viscosity index improver additive useful in oil compositions'19884,735,736'Viscosity index improver-dispersant additive'19884,692,268'Method for controlling viscosity of organic liquids and compositions'19874,659,784'Block copolymers of N,N-disubstituted acrylamides'1987

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1987–1998Based in Edison, NJ, US· patent location history
1988–2001Patents assigned to EXXON CHEMICAL PATENTS INC (28)· patent assignee history
1997–2013Based in Bellaire, TX, US· patent location history
2002–2013Patents assigned to EXXONMOBIL CHEM PATENTS INC (29)· patent assignee history
2012–2013Patents assigned to CHUNG DAVID YEN-LUNG (3)· patent assignee history
2012Patents assigned to NAPIER ROBERT CHRISTOPHER (2)· patent assignee history
2012Patents assigned to TRACEY DONALD SHELEY (2)· patent assignee history
2021Based in San Francisco, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
EXXONMOBIL CHEM PATENTS INC292002–2013
EXXON CHEMICAL PATENTS INC281988–2001
CHUNG DAVID YEN-LUNGself32012–2013
NAPIER ROBERT CHRISTOPHER22012
TRACEY DONALD SHELEY22012
Locations
LocationPatentsSpan
Bellaire, Texas, US331997–2013
Edison, New Jersey, US271987–1998
San Francisco, California, US12021