Robert Ducharme
7Patents
6h-index
7Co-inventors
52Inventor score
Filing activity: Aug 9, 1990 → Nov 10, 2005
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5125475A | Acoustic construction panel | Fixed Constructions | 50 | Expired |
| US6213252A | Sound absorbing substrate | Performing Operations; Transporting | 44 | Expired |
| US6514889B1 | Sound and thermal insulating non-woven synthetic sheet material | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6264389A | Convertible writing instrument | Performing Operations; Transporting | 17 | Expired |
| US7743572B2 | Anti-vibration sound insulator for suspended ceiling | Fixed Constructions | 11 | Active |
| US6243889A | Thermo-acoustic insulation system for sanitary device | Human Necessities | 6 | Expired |
| US7467688B2 | Multi-composite acoustic panel | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.