Inventor

David Greenwood

Inventor

Oldham, GB

Overview

25→

Patents

1980–2002

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.

C09Bprimary

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments32%

C09DCoating compositions, e.g. paints, varnishes or lacquers32%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests14%

B05CApparatus for applying fluent materials to surfaces, in general4%

G01NInvestigating or analysing materials by determining their chemical or physical properties4%

Y10TTechnical subjects covered by former us classification4%

A61BDiagnosis2%

B05BSpraying apparatus2%

B41BMachines or accessories for making, setting, or distributing type2%

G01FMeasuring volume, volume flow, mass flow or liquid level2%

PatentTitleYear

6,399,751'Reactive dyes containing a halobenzene nucleus'2002 5,254,675'Anionic disazo dyes'1993 5,203,912'Anionic dye'1993 5,171,848'Salts of black trisazo dyes with alkyl amines having good solubility in organic liquids'1992 5,118,737'Water-soluble dye'1992 5,053,495'Anionic dye having high water-fastness'1991 5,017,009'Scattered total internal reflectance immunoassay system'1991 4,979,821'Cuvette for receiving liquid sample'1990 4,799,960'Ink comprising water soluble triazine dye free from cellulose reactive groups'1989 4,790,879'Water-soluble triazane dyestuffs free from cellulose reactive groups and suitable for use in inks'1988 4,780,532'Water-soluble triazine dyestuffs free from cellulose reactive groups and suitable for use in inks'1988 4,772,323'Ink comprising at least one water soluble-formazan dye, free from cellulose-reactive groups'1988 4,767,459'Ink'1988 4,758,658'Water-soluble formazan dye'1988 4,746,733'Water-soluble triphendioxazine disazo dyes'1988 4,738,721'Ink comprising a water-soluble triphendioxazine dye'1988 4,735,657'Water-soluble dye in an ink'1988 4,726,844'Ink containing water-soluble non-reactive triazinyl mono-azo dye for ink jet printing'1988 4,705,528'Water-soluble triazine black dyes from cellulose reactive groups and suitable for use in inks'1987 4,703,113'Water-soluble triazine black dyes free from cellulose reactive groups and suitable for use in inks'1987 4,634,555'Water-soluble copper phthalocyanine dyes free from cellulose reactive groups'1987 4,601,292'Steerable Doppler transducer probes'1986 4,380,308'Self-cleaning adhesive dispensing apparatus'1983 4,231,494'Syringe adaptor assembly'1980 4,189,217'Document printing system'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1983Patents assigned to GREENWOOD DAVID L (2)· patent assignee history

1980–1986Based in New York, NY, US· patent location history

1980–1983Based in Glenview, IL, US· patent location history

1987–1993Patents assigned to ICI PLC (11)· patent assignee history

1987–2002Based in Oldham, GB· patent location history

1988–1992Patents assigned to CANON KK (7)· patent assignee history

1990–1991Patents assigned to ORTHO DIAGNOSTIC SYSTEMS INC (2)· patent assignee history

1990–1991Based in Bound Brook, NJ, US· patent location history

2002Patents assigned to BASF AG (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
ICI PLC	11	1987–1993
CANON KK	7	1988–1992
GREENWOOD DAVID Lself	2	1980–1983
ORTHO DIAGNOSTIC SYSTEMS INC	2	1990–1991
BASF AG	1	2002

Locations

Location	Patents	Span
Oldham, GB	19	1987–2002
Bound Brook, New Jersey, US	2	1990–1991
New York, New York, US	2	1980–1986
Glenview, Illinois, US	2	1980–1983