Inventor

Kenneth J. Harrison

Inventor

Malvern Link, GB

Overview

17→

Patents

1976–2001

Patent span

Chemistry

Primary field (CPC C)

Patents· 17 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 elsewhere45%

C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments21%

C07CAcyclic or carbocyclic compounds15%

C07DHeterocyclic compounds9%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein9%

PatentTitleYear

6,291,034'Naphthyl organic compounds'2001 5,888,421'Anisotropic organic compounds'1999 5,820,781'Naphthyl organic compounds'1998 5,618,929'Substituted phthalocyanines'1997 5,506,708'Substituted phthalocyanines'1996 5,496,500'Naphthyl organic compounds'1996 4,506,957'Liquid crystal materials containing pleochroic anthraquinone dyes'1985 4,496,221'Liquid crystal compositions with pleochroic anthraquines dyes'1985 4,483,594'Liquid crystal materials containing pleochroic anthraquinone dyes'1984 4,464,282'Organic materials'1984 4,405,211'Liquid crystal compositions with pleochroic anthraquinone dyes'1983 4,391,489'Liquid crystal materials containing pleochroic anthraquinone dyes'1983 4,328,116'Liquid crystal compositions for multiplexed displays'1982 4,309,304'Liquid crystal compositions for multiplexed displays'1982 4,137,524'Reversible printing display'1979 3,974,087'Liquid crystal compositions'1976 3,947,375'Liquid crystal materials and devices'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2001Patents assigned to SECR DEFENCE BRIT (14)· patent assignee history

1976Based in Hull, GB· patent location history

1979Patents assigned to OPTEL CORP (1)· patent assignee history

1979Based in Plainsboro, NJ, US· patent location history

1982Patents assigned to EXXON RESEARCH ENGINEERING CO (1)· patent assignee history

1982Patents assigned to MINNESOTA MINING & MFG (1)· patent assignee history

1982–1985Based in Malvern Link, GB· patent location history

1996–2001Based in Worcestershire, GB· patent location history

1996–1997Based in Colwall, GB· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SECR DEFENCE BRIT	14	1976–2001
EXXON RESEARCH ENGINEERING CO	1	1982
MINNESOTA MINING & MFG	1	1982
OPTEL CORP	1	1979

Locations

Location	Patents	Span
Malvern Link, GB	8	1982–1985
Worcestershire, GB	4	1996–2001
Colwall, GB	2	1996–1997
Hull, GB	2	1976
Plainsboro, New Jersey, US	1	1979