Inventor
David T. Ask
Inventor
Somerset, WI, US
Overview
Patents· 9 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Cprimary
G03CPhotosensitive materials for photographic purposes33%
G03GElectrography25%
C07CAcyclic or carbocyclic compounds17%
G02BOptical elements, systems or apparatus17%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments8%
PatentTitleYear
10,845,509Low sparkle matte coats and methods of making202010,732,331Low sparkle matte coats and methods of making20207,018,757'Photoconductor materials based on complex of charge generating material'20066,869,741'Electrophotographic photoreceptors with novel overcoats'20056,815,132'Photoconductor materials based on new phase of titanyl phthalocyanine'20045,464,737'Post-processing stabilizers for photothermographic articles'19955,369,000'Post-processing stabilizers for photothermographic articles'19944,988,612'Resistively heatable photothermographic element'19914,639,412'Resistively heated photothermographic media on vesicular substrate'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1995Patents assigned to MINNESOTA MINING & MFG (4)· patent assignee history
1987–2020Based in Somerset, WI, US· patent location history
2004–2006Patents assigned to SAMSUNG ELECTRONICS CO LTD (3)· patent assignee history
2020Patents assigned to 3M INNOVATIVE PROPERTIES CO (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MINNESOTA MINING & MFG | 4 | 1987–1995 |
| SAMSUNG ELECTRONICS CO LTD | 3 | 2004–2006 |
| 3M INNOVATIVE PROPERTIES CO | 2 | 2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Somerset, WI, US | 9 | 1987–2020 |