Inventor
D. Clint Seward
Inventor
Acton, MA, US
Overview
Patents· 7 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H02Jprimary
H02JElectric power networks30%
H05HPlasma technique30%
Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution30%
B64BLighter-than air aircraft5%
G21DNuclear power plant5%
PatentTitleYear
6,617,775'Energy storage device'20036,603,247'Energy storage and recovery system'20036,140,752'Energy storage device having a plurality of single charged particles and a charge neutralizer'20005,773,919'Electron spiral toroid'19985,589,727'Energy storage system'19965,175,466'Fixed geometry plasma and generator'19924,204,656'Airship control system'1980Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1980Patents assigned to SEWARD DEWITT C (1)· patent assignee history
1980Based in Bethel, CT, US· patent location history
1992Patents assigned to SEWARD III DEWITT C (1)· patent assignee history
1992–2003Based in Acton, MA, US· patent location history
1996–2003Patents assigned to ELECTRON POWER SYSTEMS (4)· patent assignee history
2003Patents assigned to ELECTRON POWER SYSTEMS INC (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| ELECTRON POWER SYSTEMS | 4 | 1996–2003 |
| ELECTRON POWER SYSTEMS INC | 1 | 2003 |
| SEWARD DEWITT C | 1 | 1980 |
| SEWARD III DEWITT Cself | 1 | 1992 |
Locations
| Location | Patents | Span |
|---|---|---|
| Acton, Massachusetts, US | 6 | 1992–2003 |
| Bethel, CT, US | 1 | 1980 |