Satoshi Hamada
24Patents
8h-index
40Co-inventors
75Inventor score
Filing activity: Mar 2, 1981 → Jan 9, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5703711A | In-line optical amplifier | Electricity | 37 | Expired |
| US5926381A | DC power supply apparatus | Electricity | 36 | Expired |
| US5930122A | Inverter and DC power supply apparatus with inverter used therein | Electricity | 33 | Expired |
| US5668658A | Transfer of repeater information signals in in-line optical amplifier repeater system | Electricity | 18 | Expired |
| US5923463A | Optical amplifier and method for controlling the same | Electricity | 16 | Expired |
| US5727240A | Device for judging an unexposed frame of a film | Physics | 15 | Expired |
| US7088058B2 | Image display | Physics | 13 | Expired |
| US5943512A | Apparatus equipment with position detecting device | Physics | 11 | Expired |
| US7748854B2 | Image display device | Electricity | 8 | Active |
| US7867520B2 | Flavor improving agent | Human Necessities | 5 | Active |
| US5649455A | Vehicle steering wheel | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6047135A | Driving mechanism for keeping feedback cycle constant, apparatus with the mechanism, and its control method | Electricity | 5 | Expired |
| US7835069B2 | WDM optical amplifier with heat radiation from laser source to amplification medium | Electricity | 4 | Active |
| US6914788B2 | Power supply apparatus | Electricity | 4 | Expired |
| US6704137B2 | Optical amplifier, method for optical amplification and optical transmission system | Electricity | 4 | Expired |
| US5129358A | Magnetic roller for use in a developing device | Physics | 2 | Expired |
| US4421152A | Apparatus for precision casting | Performing Operations; Transporting | 2 | Expired |
| US6173125A | Apparatus for reading magnetic information | Physics | 2 | Expired |
| US10053365B2 | Graphitization furnace, system, and graphitization method | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US5671456A | System for providing an accurate indication whether film is exposed or unexposed, independent of battery voltage | Physics | 1 | Expired |
| US6055382A | Apparatus having a judging device whether a film frame is exposed or not | Physics | 1 | Expired |
| US5765064A | Camera using film with magnetic track | Physics | 0 | Expired |
| US11798810B2 | Resist underlayer film-forming composition containing amide solvent | Electricity | 0 | Active |
| US9036008B2 | Image display device | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.