Ward D. Morrison
17Patents
8h-index
6Co-inventors
65Inventor score
Filing activity: Oct 24, 1975 → Jan 31, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4420277A | Mine roof driller-bolter apparatus and method | Fixed Constructions | 35 | Expired |
| US4550785A | Hammer | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US6413019B1 | Turret rock bolter with stinger/centralizer | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5556235A | Rock bolter | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5720582A | Bolt delivery system with linear bolt magazine | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4074771A | Rock drill | Fixed Constructions | 16 | Expired |
| US5597267A | Bolt delivery system | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6698529B2 | Translating turret rock bolter | Fixed Constructions | 8 | Expired |
| US4039032A | Hose training means | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5040618A | Pneumatic drill | Performing Operations; Transporting | 7 | Expired |
| US7371009B1 | Split gib mounting arrangement for drilling components | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US5690449A | Tool base securing system | Performing Operations; Transporting | 4 | Expired |
| US4260029A | Midpoint centralizer | Emerging Cross-Sectional Technologies | 3 | Expired |
| US4957171A | Pneumatic drill | Performing Operations; Transporting | 3 | Expired |
| US5494380A | Resin injector system | Fixed Constructions | 3 | Expired |
| US5330012A | Feed shell lubrication manifold | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8991515B2 | Fail-resistant hammer assembly for a valveless percussive drill | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.