Mikio Iwasa
13Patents
9h-index
21Co-inventors
72Inventor score
Filing activity: Apr 28, 1986 → May 20, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4823908A | Directional loudspeaker system | Electricity | 95 | Expired |
| US5664024A | Loudspeaker | Electricity | 45 | Expired |
| US7054459B2 | Surrounding structure of a loudspeaker | Electricity | 22 | Expired |
| US6757404B2 | Loud speaker, diaphragm and process for making the diaphragm | Electricity | 20 | Expired |
| US5862242A | Speaker | Electricity | 18 | Expired |
| US6305491A | Speaker | Electricity | 17 | Expired |
| US6747395B1 | Piezoelectric loudspeaker | Electricity | 15 | Expired |
| US6973194B2 | Speaker | Electricity | 14 | Expired |
| US6069965A | Loudspeaker | Electricity | 12 | Expired |
| US6714655B2 | Speaker | Electricity | 7 | Expired |
| US6655495B2 | Loudspeaker damper and loudspeaker | Electricity | 7 | Expired |
| US8428293B2 | Speaker device | Electricity | 2 | Active |
| US7447328B2 | Loudspeaker | Electricity | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.