Inventor
David Herbert Roach
Inventor
Hockessin, DE, US
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Jprimary
H01JElectric discharge tubes or discharge lamps14%
B82YSpecific uses or applications of nanostructures13%
C01BNon-metallic elements9%
H01BCables7%
Y10TTechnical subjects covered by former us classification6%
C03CChemical composition of glasses, glazes or vitreous enamels4%
C09DCoating compositions, e.g. paints, varnishes or lacquers4%
H01LSemiconductor devices4%
H10FInorganic semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation4%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution4%
PatentTitleYear
9,284,459'Process for forming an electrically conductive structure on a substrate'20169,236,161'Conductive paste composition and semiconductor devices made therewith'20168,900,488'Conductive paste composition and semiconductor devices made therewith'20148,529,798'Process for improving the emission of electron field emitters'20138,309,223'Polyimide based purge media and methods relating thereto'20128,298,449'Dielectric composition with reduced resistance'20128,076,834'Field emission device with protecting vapor'20118,070,906'Process for improving the emission of electron field emitters'20118,011,990'Process for improving the emission of electron field emitters'20117,750,544'Electron emitter composition made of an electron emitting substance and an expansion material for expansion of the electron emitting substance'20107,476,340'Composition containing alloyed nanophene moieties'20097,449,082'Process for improving the emissions of electron field emitters'20087,449,081'Process for improving the emission of electron field emitters'20087,317,277'Electron field emitter and compositions related thereto'20087,276,844'Process for improving the emission of electron field emitters'20076,475,412'Process for making polyurethaneurea powder'20025,879,596'Low temperature process for making polyurethaneureas'1999Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1999–2016Patents assigned to DU PONT (16)· patent assignee history
1999Based in Newark, DE, US· patent location history
2002Based in Wilmington, DE, US· patent location history
2007–2016Based in Hockessin, DE, US· patent location history
2011–2013Patents assigned to ROACH DAVID HERBERT (5)· patent assignee history
2011–2013Patents assigned to BOUCHARD ROBERT JOSEPH (3)· patent assignee history
2011–2012Patents assigned to CHENG LAP-TAK ANDREW (2)· patent assignee history
2011–2013Patents assigned to LAVIN JOHN GERARD (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DU PONT | 16 | 1999–2016 |
| ROACH DAVID HERBERTself | 5 | 2011–2013 |
| BOUCHARD ROBERT JOSEPH | 3 | 2011–2013 |
| CHENG LAP-TAK ANDREW | 2 | 2011–2012 |
| LAVIN JOHN GERARD | 2 | 2011–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Hockessin, Delaware, US | 15 | 2007–2016 |
| Wilmington, Delaware, US | 1 | 2002 |
| Newark, Delaware, US | 1 | 1999 |