Inventor
DOUGLAS B. CAMPBELL
Inventor
US
Overview
Patents· 6 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
A63Bprimary
A63BApparatus for physical training, gymnastics, swimming, climbing, or fencing21%
B23KSoldering or unsoldering14%
C21DModifying the physical structure of ferrous metals14%
C22CAlloys14%
C23CCoating metallic material14%
F42BExplosive charges, e.g. for blasting, fireworks, ammunition14%
LOC217%
PatentTitleYear
12,331,372Steel compositions, methods of manufacture and uses in producing rimfire cartridges202512,042,714Basketball training system202411,905,569Steel compositions, methods of manufacture and uses in producing rimfire cartridges202411,890,521Basketball training system202411,577,139Basketball training system2023D0972675Basketball passing machine2022Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2022–2024Patents assigned to AIRBORNE ATHLETICS INC (4)· patent assignee history
2022–2025Based in US· patent location history
2024–2025Patents assigned to GREER STEEL COMPANY (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| AIRBORNE ATHLETICS INC | 4 | 2022–2024 |
| GREER STEEL COMPANY | 2 | 2024–2025 |
Locations
| Location | Patents | Span |
|---|---|---|
| US | 6 | 2022–2025 |