Inventor
Patricia A. Graham
Inventor
Williamson, NY, US
Overview
Patents· 10 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Cprimary
G03CPhotosensitive materials for photographic purposes29%
C07DHeterocyclic compounds21%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments21%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests17%
B41JTypewriters4%
G05BControl or regulating systems in general4%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters4%
PatentTitleYear
4,789,257'Line find feature for an electronic typewriter'19884,727,304'Phase sequencer for stepping motor'19884,706,008'Self-adjusting homing for a stepping motor'19874,507,479'Color-forming sulfonamidodiphenylamine dye precursor that produces phenazine dye'19854,499,304'Color-forming sulfonamidodiphenylamines and corresponding sulfonimide dyes'19854,390,606'Color-forming para-sulfonamidodiphenylamine dye precursor and sulfonimide dye in photographic material and process'19834,380,666'Color-forming sulfonamidodiphenylamine dye precursor that produces phenazine dye'19834,368,246'Photographic materials and processes comprising color-forming sulfonamidodiphenylamine dye precursors and corresponding phenazine dyes'19834,128,557'Silver salts of 1,2,4-mercaptotriazole derivatives'19784,123,274'Heat developable imaging materials and process'1978Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1978–1985Patents assigned to EASTMAN KODAK CO (7)· patent assignee history
1978Based in Fairport, NY, US· patent location history
1983–1985Based in Williamson, NY, US· patent location history
1987–1988Patents assigned to IBM (3)· patent assignee history
1987–1988Based in Lexington, KY, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| EASTMAN KODAK CO | 7 | 1978–1985 |
| IBM | 3 | 1987–1988 |
Locations
| Location | Patents | Span |
|---|---|---|
| Williamson, New York, US | 5 | 1983–1985 |
| Lexington, KY, US | 3 | 1987–1988 |
| Fairport, New York, US | 2 | 1978 |