Akira Hamada
76Patents
18h-index
82Co-inventors
87Inventor score
Filing activity: Sep 6, 1983 → Sep 23, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5184907A | Portable printer for printing on a flat sheet | Performing Operations; Transporting | 112 | Expired |
| US5314762A | Portable power source | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4976182A | Musical score display device | Emerging Cross-Sectional Technologies | 44 | Expired |
| US8581992B2 | Image capturing apparatus and camera shake correction method, and computer-readable medium | Electricity | 38 | Active |
| US6083638A | Fuel cell | Emerging Cross-Sectional Technologies | 35 | Expired |
| US8744174B2 | Image processing apparatus, image processing method, and storage medium | Physics | 35 | Active |
| US6365293B1 | Fuel cell having water permeability adjustment capability | Emerging Cross-Sectional Technologies | 31 | Expired |
| US5302471A | Compact phosphoric acid fuel cell system and operating method thereof | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6080500A | Movable fuel cell apparatus | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4469978A | Electrode arrangement for a folded polymer piezoelectric ultrasonic detector | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4617231A | Electroconductive film and process for production thereof | Emerging Cross-Sectional Technologies | 27 | Expired |
| US5541015A | Fuel cell using a separate gas cooling method | Emerging Cross-Sectional Technologies | 26 | Expired |
| US6329094A | Polymer electrolyte fuel cell showing stable and outstanding electric-power generating characteristics | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5543241A | Fuel cell | Emerging Cross-Sectional Technologies | 22 | Expired |
| US5958613A | Polymer electrolyte fuel cell and a polymer electrolyte fuel cell system which supply anode-side channels with a gas-liquid mixture | Emerging Cross-Sectional Technologies | 22 | Expired |
| US8036491B2 | Apparatus and method for aligning images by detecting features | Physics | 21 | Active |
| US4724545A | Squelch detecting circuit with squelch start determining means | Electricity | 21 | Expired |
| US4611141A | Lead structure for a piezoelectric array-type ultrasonic probe | Performing Operations; Transporting | 19 | Expired |
| US5095448A | Data displaying apparatus with novel graphic position and ratio display means | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4992959A | Method and apparatus for rotating character array image | Physics | 14 | Expired |
| US4628573A | Process for producing array-type ultrasonic probe | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6566002B2 | Polymer electrolyte fuel cell | Emerging Cross-Sectional Technologies | 8 | Expired |
| US8121193B2 | Motion picture encoding device and motion picture encoding processing program | Electricity | 8 | Active |
| US7585585B2 | Electrode catalyst for use in a fuel cells, and fuel cell and electrode utilizing same | Emerging Cross-Sectional Technologies | 8 | Active |
| US7392401B2 | Data storage apparatus | Electricity | 8 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.