James E. Hammer
46Patents
12h-index
7Co-inventors
74Inventor score
Filing activity: Nov 26, 1991 → Jun 27, 2024
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5350256A | Interlocking retaining walls blocks and system | Fixed Constructions | 94 | Expired |
| US5688078A | Interlocking retaining walls blocks and system | Fixed Constructions | 79 | Expired |
| US7328537B2 | Wall block, system and method | Fixed Constructions | 48 | Expired |
| US7503729B2 | Reinforced retaining wall and method of construction | Fixed Constructions | 41 | Expired |
| US7946086B2 | Masonry block wall system | Fixed Constructions | 37 | Active |
| USD650918S1 | Retaining block | General | 34 | Expired |
| USD532119S1 | Wall block | General | 27 | Expired |
| US7591447B2 | Wall block, system and mold for making the same | Fixed Constructions | 19 | Active |
| USD668792S1 | Wall block | General | 18 | Active |
| USD611166S1 | Retaining block | General | 18 | Expired |
| USD611165S1 | Retaining block | General | 18 | Expired |
| USD652153S1 | Wall block | General | 15 | Expired |
| USD652155S1 | Wall block | General | 11 | Expired |
| US9902600B2 | Retaining wall system | Fixed Constructions | 11 | Active |
| USD608462S1 | Wall block | General | 11 | Expired |
| USD575413S1 | Wall block | General | 11 | Expired |
| USD610713S1 | Retaining block | General | 11 | Expired |
| USD676070S1 | Concrete block mold | General | 10 | Active |
| US8667759B2 | Wall block system | Fixed Constructions | 10 | Active |
| USD674121S1 | Wall block | General | 10 | Active |
| USD652531S1 | Wall block | General | 9 | Expired |
| USD514233S1 | Wall block | General | 9 | Expired |
| USD665928S1 | Wall block | General | 8 | Active |
| USD663329S1 | Concrete block mold | General | 8 | Active |
| USD652154S1 | Wall block | General | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.