Inventor

Harold E. Bellis

Inventor

Wilmington, DE, US

Overview

30→

Patents

1977–2013

Patent span

Chemistry

Primary field (CPC C)

Patents· 30 as inventor

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

C07Cprimary

C07CAcyclic or carbocyclic compounds28%

G09GArrangements or circuits for control of indicating devices using static means to present variable information18%

C07DHeterocyclic compounds10%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%

C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds5%

C09KMaterials for miscellaneous applications, not provided for elsewhere5%

H04NPictorial communication, e.g. television5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium3%

C11DDetergent compositions3%

PatentTitleYear

8,576,487'Spoke light recapture for the spoke between a color of a wheel and its neutral density complement'2013 7,972,001'Projection illumination device and method for projection visual display system using multiple controlled light emitters having individual wavelengths'2011 7,948,499'Color control algorithm for use in display systems'2011 7,623,286'System and method for displaying images'2009 7,471,273'Bit segment timing organization providing flexible bit segment lengths'2008 7,403,187'Generalized reset conflict resolution of load/reset sequences for spatial light modulators'2008 7,265,794'Managing the color temperature for a light source array'2007 7,161,608'Digital system and method for displaying images using shifted bit-weights for neutral density filtering applications'2007 5,880,573'Low-cost phase-lock motor control method and architecture'1999 5,696,287'Process for making aqueous betaine solutions'1997 5,684,191'Process for the combined synthesis of betaine and choline chloride'1997 5,679,864'Process for the synthesis of curcumin-related compounds'1997 5,374,743'Process for the synthesis of lactide or glycolide from lactic acid or glycolide acid oligomers'1994 5,278,256'Rapidly degradable poly (hydroxyacid) compositions'1994 5,179,232'Process for solubilizing formaldehyde oligomers'1993 5,138,074'Continuous catalyzed vapor phase dimeric cyclic ester process'1992 5,110,954'Dehydrogenation of diols'1992 5,110,868'Biodegradable compositions for controlled release of chemical agents'1992 4,986,353'Placement process for oil field chemicals'1991 4,985,180'Process for preparing phenyl esters of substituted acids'1991 4,853,485'Method for producing monomethylformamide and dimethylformamide'1989 4,727,163'Process for preparing highly pure cyclic esters'1988 4,715,967'Composition and method for temporarily reducing permeability of subterranean formations'1987 4,543,424'Process for preparing substituted formamides'1985 4,354,041'Method for deactivating catalyst in preparation of dimethylformamide from dimethylamine and carbon monoxide'1982 4,302,598'Recycling catalyst in preparation of dimethylformamide from dimethylamine and carbon monoxide'1981 4,281,193'Process for preparing substituted formamides'1981 4,130,595'Melt oxychlorination process'1978 4,127,513'Method for preparing polyether glycols'1978 4,002,778'Chemical plating process'1977

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1977–1994Patents assigned to DU PONT (18)· patent assignee history

1977–1997Based in Wilmington, DE, US· patent location history

1978Based in Hockessin, DE, US· patent location history

1991Patents assigned to CONOCO INC (1)· patent assignee history

1997Patents assigned to DUCOA LP (2)· patent assignee history

1999–2013Patents assigned to TEXAS INSTRUMENTS INC (9)· patent assignee history

1999–2013Based in Garland, TX, US· patent location history

2013Patents assigned to BELLIS II HAROLD E (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
DU PONT	18	1977–1994
TEXAS INSTRUMENTS INC	9	1999–2013
DUCOA LP	2	1997
BELLIS II HAROLD Eself	1	2013
CONOCO INC	1	1991

Locations

Location	Patents	Span
Wilmington, Delaware, US	20	1977–1997
Garland, Texas, US	9	1999–2013
Hockessin, Delaware, US	1	1978