Shiro Tsuda
13Patents
7h-index
11Co-inventors
59Inventor score
Filing activity: Dec 15, 1994 → Jan 30, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7729504B2 | Ferrofluid centered voice coil speaker | Electricity | 17 | Active |
| US6056889A | Process for producing a magnetic fluid and composition therefor | Electricity | 16 | Expired |
| US6261471A | Composition and method of making a ferrofluid having an improved chemical stability | Electricity | 15 | Expired |
| US7063802B2 | Composition and method of making an element-modified ferrofluid | Electricity | 13 | Expired |
| US6277298A | Ferrofluid composition and process | Electricity | 12 | Expired |
| US5676877A | Process for producing a magnetic fluid and composition therefor | Electricity | 10 | Expired |
| US6804368B2 | Micro-speaker and method for assembling a micro-speaker | Emerging Cross-Sectional Technologies | 9 | Expired |
| US5730893A | Magnetic colloids using acid terminated poly (12-hydroxystearic acid) dispersants | Electricity | 5 | Expired |
| US5879580A | Ferrofluid having improved oxidation resistance | Electricity | 5 | Expired |
| US5656196A | Ferrofluid having improved oxidation resistance | Electricity | 4 | Expired |
| US7266214B2 | Audio speaker and method for assembling an audio speaker | Emerging Cross-Sectional Technologies | 2 | Expired |
| US6868167B2 | Audio speaker and method for assembling an audio speaker | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7248714B2 | Micro-speaker and method for assembling a micro-speaker | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.