Tetsuo Wada
17Patents
8h-index
33Co-inventors
72Inventor score
Filing activity: Sep 25, 1979 → Jul 11, 2008
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4309192A | Treatment of water-containing coal | Chemistry; Metallurgy | 25 | Expired |
| US5153067A | Collagen powder having good dispersion stability and use thereof as leather-like surface layer-forming agent | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7092638B2 | Optical multiplex communication system, optical transmission apparatus, and control method of optical multiplex communication | Electricity | 17 | Expired |
| US6560008B1 | Controlling apparatus and controlling method for wavelength division multiplexing optical amplifier | Electricity | 15 | Expired |
| US5274078A | Process for producing collagen powder | Chemistry; Metallurgy | 9 | Expired |
| US6937820B2 | Optical level control method | Electricity | 9 | Expired |
| US4443328A | Method for continuous thermal cracking of heavy petroleum oil | Chemistry; Metallurgy | 9 | Expired |
| US7343102B2 | Optical transmission system with automatic signal level adjustment and startup functions | Electricity | 8 | Expired |
| US6583909B1 | Optical communication system and optical signal control method therefor | Electricity | 8 | Expired |
| US6064513A | Optical transmission system | Electricity | 3 | Expired |
| US4816699A | Slice amplifier using FET's | Electricity | 3 | Expired |
| US4246000A | Fuel compositions comprising coal-liquid fuel mixture | Chemistry; Metallurgy | 3 | Expired |
| US6870666B2 | Controlling apparatus and controlling method for wavelength division multiplexing optical amplifier | Electricity | 2 | Expired |
| US7006278B2 | Wavelength-division multiplexing optical transmission system and repeater station therein | Electricity | 2 | Expired |
| US7509055B2 | Optical transmission system with automatic signal level adjustment and startup functions | Electricity | 2 | Active |
| US4978808A | Method of producing 2,2-bis(3-nitro-4-hydroxyphenyl)hexafluoropropane | Chemistry; Metallurgy | 1 | Expired |
| US8420216B2 | Thermosetting resin composition | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.