Leon Helfet
7Patents
5h-index
3Co-inventors
52Inventor score
Filing activity: Feb 15, 2000 → Jul 8, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7997230B2 | Manual litter box | Human Necessities | 28 | Active |
| US7425274B1 | Aquarium filter unit | Chemistry; Metallurgy | 20 | Active |
| US6789450B1 | Manually operated strap wrench for turning generally cylindrical objects | Performing Operations; Transporting | 14 | Expired |
| US6178563A | Toilet deodorizer | Fixed Constructions | 13 | Expired |
| US7155999B1 | Strap wrench for gripping and turning generally cylindrical objects | Performing Operations; Transporting | 8 | Expired |
| US8567348B2 | Manual litter box | Human Necessities | 5 | Active |
| US7601258B1 | Aquarium filter water return chamber | Human Necessities | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.