Thomas Duckwall
7Patents
3h-index
12Co-inventors
54Inventor score
Filing activity: Aug 6, 1996 → Apr 10, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6945082B2 | Key blank, key and master keying system | Emerging Cross-Sectional Technologies | 36 | Expired |
| US6012311A | Removable core lock | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5758676A | Support-door hinge | Human Necessities | 6 | Expired |
| US11624206B2 | Lock cylinder and key with multiple, supplemental locking elements | Fixed Constructions | 1 | Active |
| US11280111B2 | Operating a lock cylinder with multiple, supplemental locking elements | Fixed Constructions | 1 | Active |
| US12196000B2 | Cylinder lock with multiple, supplemental locking elements and associated key | Fixed Constructions | 0 | Active |
| US12077983B2 | Key and key blanks operable in vertically and horizontally oriented keyways | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.