John R. Frederick
8Patents
5h-index
18Co-inventors
60Inventor score
Filing activity: Oct 15, 1980 → Jul 29, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5308196A | Yieldable confined core mine roof support | Fixed Constructions | 33 | Expired |
| US6497536B1 | Roof support arrangement for mining apparatus and roof bolting equipment | Performing Operations; Transporting | 27 | Expired |
| US6224164A | Mining machine with detachable articulated cutting assembly | Fixed Constructions | 16 | Expired |
| US6325460A | Machine used in connection with underground mining having an operator protective shield | Fixed Constructions | 11 | Expired |
| US6364148B1 | Storage pod for underground mining machine | Performing Operations; Transporting | 10 | Expired |
| US4446606A | Continuous compressive preshrinking and drying method | Textiles; Paper | 5 | Expired |
| US9874095B2 | Cutting bit and extraction tool for same | Fixed Constructions | 0 | Active |
| US10677054B2 | Cutting bit assembly | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.