Inventor
David B. Powell
Inventor
Minnetonka, MN, US
Overview
Patents· 12 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G03Fprimary
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices40%
H01HElectric switches27%
Y10TTechnical subjects covered by former us classification13%
C07CAcyclic or carbocyclic compounds7%
H02BBoards, substations or switching arrangements for the supply or distribution of electric power7%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests7%
PatentTitleYear
11,091,465Carbocyclic prolinamide derivatives20217,803,510'Positive photosensitive polybenzoxazole precursor compositions'20107,416,830'Photosensitive resin compositions'20087,407,731'Photosensitive resin compositions'20087,399,572'Pretreatment compositions'20087,220,520'Photosensitive resin compositions'20077,129,011'Photosensitive resin compositions'20064,499,344'Interlock arrangement for circuit breaker compartments'19854,489,362'Electric switchboard apparatus with a breaker-fuse interlock'19844,220,936'Manually operated generator circuit breaker'19804,042,896'Manual and motor operated circuit breaker'19774,001,739'Circuit breaker with bell alarm and breaker lockout accessory'1977Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1977–1985Patents assigned to GEN ELECTRIC (5)· patent assignee history
1977–1985Based in Burlington, CT, US· patent location history
1977Based in Bristol, CT, US· patent location history
2006Patents assigned to ARCH SPEC CHEM INC (1)· patent assignee history
2006–2010Based in Minnetonka, MN, US· patent location history
2007–2010Patents assigned to FUJIFILM ELECTRONIC MATERIALS (5)· patent assignee history
2021Based in Vancouver, CA· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FUJIFILM ELECTRONIC MATERIALS | 5 | 2007–2010 |
| GEN ELECTRIC | 5 | 1977–1985 |
| ARCH SPEC CHEM INC | 1 | 2006 |
Locations
| Location | Patents | Span |
|---|---|---|
| Minnetonka, Minnesota, US | 6 | 2006–2010 |
| Burlington, CT, US | 4 | 1977–1985 |
| Vancouver, CA | 1 | 2021 |
| Bristol, CT, US | 1 | 1977 |