Edward C. Frederick
15Patents
8h-index
12Co-inventors
69Inventor score
Filing activity: Aug 20, 1980 → Jul 6, 2009
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4578769A | Device for determining the speed, distance traversed, elapsed time and calories expended by a person while running | Human Necessities | 405 | Expired |
| US4562651A | Sole with V-oriented flex grooves | Human Necessities | 260 | Expired |
| US4535553A | Shock absorbing sole layer | Human Necessities | 239 | Expired |
| US4354318A | Athletic shoe with heel stabilizer | Human Necessities | 97 | Expired |
| US7020988B1 | Footwear with enhanced impact protection | Human Necessities | 77 | Expired |
| US7278226B2 | Footwear with enhanced impact protection | Human Necessities | 32 | Expired |
| US7832118B2 | Footwear with enhanced impact protection | Human Necessities | 24 | Active |
| USD341023S | Shoe insole with bottom pattern | General | 16 | Expired |
| USD498425S1 | Finger watch | General | 6 | Expired |
| US7788826B2 | Dynamically moderated shock attenuation system for footwear | Human Necessities | 5 | Active |
| US8359770B2 | Dynamically moderated shock attenuation system for apparel | Human Necessities | 4 | Active |
| US8166671B2 | Adjustable shock attenuating means for footwear and footwear using the same | Human Necessities | 3 | Active |
| US8276296B2 | Dynamically moderated shock attenuation system | Human Necessities | 2 | Active |
| USD501144S1 | Finger watch | General | 2 | Expired |
| USD501412S1 | Finger watch | General | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.