Inventor

Damien G. McDonnell

Inventor

Malvern, GB

Overview

1978–2002

Patent span

Chemistry

Primary field (CPC C)

Patents· 50 as inventor

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

C09Kprimary

C09KMaterials for miscellaneous applications, not provided for elsewhere40%

C07CAcyclic or carbocyclic compounds25%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein17%

G01KMeasuring temperature5%

C07BGeneral methods of organic chemistry2%

B01DSeparation1%

B41MPrinting, duplicating, marking, or copying processes1%

C07DHeterocyclic compounds1%

C07FAcyclic, carbocyclic or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium1%

C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds1%

PatentTitleYear

6,337,420'Liquid crystal compounds, mixtures and devices'2002 6,278,028'Liquid crystal compounds, mixtures and devices'2001 6,259,497'Large area liquid crystal displays'2001 6,251,301'Ferroelectric liquid crystal devices'2001 6,242,636'Liquid crystal compounds, mixtures and devices'2001 6,215,543'Ferroelectric liquid crystal device comprising a polymer and exhibiting a minimum in a response time verses voltage curve'2001 6,151,096'Liquid crystal display including dopant phase-separated from liquid crystal'2000 6,118,510'Liquid crystal device'2000 6,075,583'Ferroelectric liquid crystal devices'2000 6,060,133'Polysiloxanes'2000 6,016,180'Liquid crystal device'2000 5,955,000'Chiral compounds'1999 5,917,570'Liquid crystal device alignment'1999 5,891,358'Liquid crystal mixtures and devices'1999 5,866,038'Liquid crystal polyacrylates'1999 5,820,786'Ferroelectric liquid crystal devices'1998 5,796,459'Bistable nematic liquid crystal device with bigrating alignment layers and twist'1998 5,764,325'Liquid crystal device alignment'1998 5,760,860'Electro-optic scattering type devices with color polariser for switchable color'1998 5,754,264'Ferroelectric liquid crystal device alignment'1998 5,750,050'Discotic compounds for use in liquid crystal mixtures'1998 5,724,113'Liquid crystal device alignment layer having an asymmetric profile grating on its surface'1998 5,676,878'Liquid crystal polymers'1997 5,611,957'Ferroelectric liquid crystal device'1997 5,578,242'Thio-ester compounds and mixtures and devices containing such compounds'1996 5,498,366'Liquid crystal thiol compounds'1996 5,352,381'Liquid crystal thiol compounds'1994 5,334,327'Laterally fluorinated 4-cyanophenyl and 4\'-cyanobiphenyl benzoates'1994 5,189,534'Liquid crystal color displays which cool from isotropic to twisted nematic to smectic'1993 5,156,763'Laterally fluorinated 4-cyanophenyl and 4\'-cyanobiphenyl benzoates'1992 4,834,500'Thermochromic liquid crystal displays'1989 4,742,173'Dithiene derivative'1988 4,741,859'Thermochromic liquid crystal materials and devices'1988 4,695,131'Disubstituted ethanes and their use in liquid crystal materials and devices'1987 4,668,811'Dithiene derivative'1987 4,566,759'Laterally fluorinated liquid crystal materials and frequency change devices'1986 4,544,497'Liquid crystal materials containing substituted bicyclo(2,2,2)octanes'1985 4,483,595'Liquid crystal compositions'1984 4,482,472'Liquid crystal materials'1984 RE031715'Liquid crystal compounds'1984 4,468,137'Temperature indicating devices'1984 4,261,652'Liquid crystal compounds and materials and devices containing them'1981 4,261,651'Liquid crystal compounds'1981 4,257,911'Liquid crystal materials'1981 4,219,256'Liquid crystal compounds and materials and devices containing them'1980 4,195,916'Liquid crystal compounds'1980 4,149,413'Optically active liquid crystal mixtures and liquid crystal devices containing them'1979 4,145,114'Pleochroic dyes'1979 4,113,647'Liquid crystalline materials'1978 4,077,260'Optically active cyano-biphenyl compounds and liquid crystal materials containing them'1978

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1978–2002Patents assigned to SECR DEFENCE BRIT (39)· patent assignee history

1978–1996Based in Hull, GB· patent location history

1980–2002Based in Malvern, GB· patent location history

1984–1999Patents assigned to SECR DEFENCE (2)· patent assignee history

1987–1988Patents assigned to ICI PLC (2)· patent assignee history

1987Patents assigned to BALKWILL PETER H (1)· patent assignee history

1987–2001Based in Worcester, GB· patent location history

1989–1997Based in Worcestershire, GB· patent location history

2000Patents assigned to SHARP KK (3)· patent assignee history

2000Based in Malvern Link, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SECR DEFENCE BRIT	39	1978–2002
SHARP KK	3	2000
ICI PLC	2	1987–1988
SECR DEFENCE	2	1984–1999
BALKWILL PETER H	1	1987

Locations

Location	Patents	Span
Malvern, GB	32	1980–2002
Hull, GB	7	1978–1996
Worcester, GB	3	1987–2001
Malvern Link, GB	3	2000
Worcestershire, GB	3	1989–1997