Hitoshi Otsuka
20Patents
10h-index
23Co-inventors
75Inventor score
Filing activity: Dec 21, 1990 → Jun 20, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD583374S1 | Recording medium | General | 45 | Expired |
| USD556752S1 | Recording medium | General | 42 | Expired |
| USD554119S1 | USB flash memory | General | 35 | Expired |
| USD754138S1 | Recording medium | General | 34 | Active |
| USD798307S1 | Recording medium | General | 24 | Active |
| USD633441S1 | Inverter | General | 21 | Expired |
| USD761247S1 | Server for computer | General | 16 | Active |
| USD629408S1 | Recording medium | General | 13 | Expired |
| US6791501B2 | Vehicle roof mount antenna | Electricity | 13 | Expired |
| US5117754A | Cleaning apparatus for impression cylinder of offset sheet-fed press | Performing Operations; Transporting | 12 | Expired |
| USD494328S1 | Electronic vacuum cleaner | General | 9 | Expired |
| US5634534A | Longitudinal locking mechanism for vehicle seat | Performing Operations; Transporting | 8 | Expired |
| USD605198S1 | Recording medium | General | 7 | Expired |
| USD629407S1 | Recording medium | General | 5 | Expired |
| US6320827A | Optical disc reproducing apparatus | Physics | 5 | Expired |
| US7671122B2 | Wax composition and method for production thereof | Emerging Cross-Sectional Technologies | 4 | Expired |
| USD798880S1 | Recording medium | General | 2 | Active |
| USD581925S1 | Emulator for a microcomputer | General | 2 | Expired |
| US7989522B2 | Biodegradable wax composition | Chemistry; Metallurgy | 1 | Active |
| US6506442B2 | Method for producing magnetic recording medium | Performing Operations; Transporting | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.