Hiroshi Umeno
11Patents
3h-index
19Co-inventors
57Inventor score
Filing activity: Oct 20, 1983 → Oct 23, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4692123A | Outboard motor | Mechanical Engineering; Lighting; Heating | 19 | Expired |
| US4554780A | Power transmission apparatus in mobile type lawn mower | Human Necessities | 9 | Expired |
| US8739521B2 | Cogeneration apparatus | Emerging Cross-Sectional Technologies | 4 | Active |
| US7015345B2 | Propionic acid derivatives | Chemistry; Metallurgy | 3 | Expired |
| US7937082B2 | Mobile communication terminal, IC card, mobile communication system, program, and communication charge notification method | Electricity | 3 | Active |
| US8489091B2 | Mobile communication terminal, IC card, mobile communication system, program, and communication charge notification method | Electricity | 1 | Active |
| US7399548B2 | Fuel cell stack | Emerging Cross-Sectional Technologies | 1 | Expired |
| US12304343B2 | Method of controlling battery replacement, battery replacement control device, and battery replacement control system | Emerging Cross-Sectional Technologies | 0 | Active |
| US12290622B2 | Closed circulation system test apparatus for blood purification device using whole blood | Human Necessities | 0 | Active |
| US7655336B2 | Fuel-cell system | Emerging Cross-Sectional Technologies | 0 | Active |
| US7974603B2 | Authentication vector generating device, subscriber authentication module, mobile communication system, and authentication vector generation method | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.