Inventor
Ivan H. Skoog
Inventor
Lake Elmo, MN, US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Cprimary
G03CPhotosensitive materials for photographic purposes33%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments28%
B41MPrinting, duplicating, marking, or copying processes11%
C07CAcyclic or carbocyclic compounds11%
C07DHeterocyclic compounds11%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests6%
PatentTitleYear
6,143,487'Photothermographic elements'20005,041,550'Infra-red sensitizing dyes for silver halide'19914,959,294'Infra-red sensitising dyes for silver halide'19904,404,277'Desensitizing dyes for photographic emulsions'19834,018,810'Organic dye having fluoroaliphatic substituent'19773,933,914'Organic dye having fluoroaliphatic substituent'1976Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1976–1991Patents assigned to MINNESOTA MINING & MFG (5)· patent assignee history
1976–2000Based in Lake Elmo, MN, US· patent location history
1983–1991Based in St. Paul, MN, US· patent location history
2000Patents assigned to EASTMAN KODAK CO (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MINNESOTA MINING & MFG | 5 | 1976–1991 |
| EASTMAN KODAK CO | 1 | 2000 |
Locations
| Location | Patents | Span |
|---|---|---|
| Lake Elmo, Minnesota, US | 3 | 1976–2000 |
| St. Paul, Minnesota, US | 3 | 1983–1991 |