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Inventor

Kevin P. Hall

Inventor
Leaden Roding, GB

Overview

9→
Patents
1988–2002
Patent span
Physics
Primary field (CPC G)

Patents· 9 as inventor

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

G03Cprimary
G03CPhotosensitive materials for photographic purposes50%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments17%
C07CAcyclic or carbocyclic compounds11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
C07DHeterocyclic compounds6%
C08FMacromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds6%
PatentTitleYear
6,399,290'Silver halide imaging materials'20025,800,974'Silver halide imaging materials'19985,496,696'Silver halide imaging materials'19965,245,045'Near infrared antihalation dyes'19935,216,166'Infra-red sensitive photographic materials'19935,068,167'High contrast photographic materials'19914,925,832'Silver halide photographic light-sensitive systems'19904,798,780'Silver halide photographic light-sensitive systems comprising a hydrazine which contains a group undergoing a cyclization reactionupon cleavage from the hydrazine'19894,746,593'Silver halide radiation-sensitive photographic materials'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1996Patents assigned to MINNESOTA MINING & MFG (7)· patent assignee history
1988–1989Based in Harlow, GB· patent location history
1991Based in High Wych, GB· patent location history
1993Based in Sawbridgeworth, GB· patent location history
1993Based in Leaden Roading, GB· patent location history
1996–2002Based in Leaden Roding, GB· patent location history
1998Patents assigned to IMATION CORP (1)· patent assignee history
2002Patents assigned to EASTMAN KODAK CO (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
MINNESOTA MINING & MFG71988–1996
EASTMAN KODAK CO12002
IMATION CORP11998
Locations
LocationPatentsSpan
Leaden Roding, GB31996–2002
Harlow, GB21988–1989
Sawbridgeworth, GB11993
Leaden Roading, GB11993
High Wych, GB11991