Mark A. Krull
121Patents
40h-index
19Co-inventors
87Inventor score
Filing activity: Mar 10, 1994 → Sep 18, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6033350A | Exercise resistance methods and apparatus | Emerging Cross-Sectional Technologies | 132 | Expired |
| US6416446B1 | Selectorized dumbbell | Human Necessities | 116 | Expired |
| US6540650B1 | Weight selection method and apparatus | Human Necessities | 108 | Expired |
| US6629910B1 | Adjustable weight exercise apparatus | Human Necessities | 107 | Expired |
| US6402666B2 | Adjustable weight exercise methods and apparatus | Human Necessities | 102 | Expired |
| US6733424B2 | Exercise resistance methods and apparatus | Human Necessities | 102 | Expired |
| US6669606B2 | Weight selection methods and apparatus | Human Necessities | 99 | Expired |
| US6322481A | Adjustable weight exercise methods and apparatus | Human Necessities | 97 | Expired |
| US6183397A | Multi-functional exercise methods and apparatus | Human Necessities | 93 | Expired |
| US6422979B1 | Weight selection methods for adjusting resistance to exercise | Human Necessities | 86 | Expired |
| US5876313A | Weight stack methods and apparatus | Emerging Cross-Sectional Technologies | 85 | Expired |
| US6749547B2 | Weight selection methods and apparatus | Human Necessities | 85 | Expired |
| US6679816B1 | Adjustable weight exercise methods and apparatus | Human Necessities | 82 | Expired |
| US6746381B2 | Exercise weight selection methods and apparatus | Human Necessities | 77 | Expired |
| US6719674B2 | Adjustable weight exercise methods and apparatus | Human Necessities | 76 | Expired |
| US6099442A | Exercise dumbbells | Human Necessities | 74 | Expired |
| US6855097B2 | Adjustable mass exercise methods and apparatus | Human Necessities | 73 | Expired |
| US7077791B2 | Weight selection methods and apparatus | Human Necessities | 71 | Expired |
| US6974405B2 | Exercise resistance methods and apparatus | Emerging Cross-Sectional Technologies | 68 | Expired |
| US7141008B2 | Rowing machine with elliptical seat motion | Human Necessities | 66 | Expired |
| US6186927A | Weight selection apparatus | Emerging Cross-Sectional Technologies | 63 | Expired |
| US7621855B1 | Exercise dumbbell methods and apparatus | Human Necessities | 62 | Active |
| US6899661B1 | Exercise resistance methods and apparatus | Human Necessities | 61 | Expired |
| US6872173B2 | Adjustable dumbbell methods and apparatus | Human Necessities | 56 | Expired |
| US7537550B1 | Exercise weight stack methods and apparatus | Human Necessities | 55 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.