Tohru Nishikawa
23Patents
6h-index
38Co-inventors
69Inventor score
Filing activity: Dec 4, 1995 → May 20, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6327407A | Semiconductor light-receiving device, method of manufacturing the same, bidirectional optical semiconductor device, and optical transmission system | Physics | 28 | Expired |
| US6264377A | Bidirectional optical semiconductor apparatus | Physics | 21 | Expired |
| US6517257B2 | Optical transmitter/receiver apparatus, method for fabricating the same and optical semiconductor module | Physics | 18 | Expired |
| US6547451B1 | Optical communications module and method for mounting optical communications module | Physics | 16 | Expired |
| US6350064B2 | Bidirectional optical semiconductor apparatus | Physics | 16 | Expired |
| US6332719A | Optical transmitter/receiver apparatus, method for fabricating the same and optical semiconductor module | Physics | 12 | Expired |
| US7524600B2 | Electrophotographic toner | Physics | 2 | Active |
| US10268155B2 | Waste toner transport unit and image forming apparatus | Physics | 1 | Active |
| US9745231B2 | Paraffin mixture and method for producing same | Human Necessities | 0 | Active |
| US12373089B2 | Display device, display method, and program | Electricity | 0 | Active |
| US11044375B2 | Multifunctional apparatus having external recording medium slot | Electricity | 0 | Active |
| US9855201B2 | Volatile oil for cosmetics | Human Necessities | 0 | Active |
| US6515307B2 | Bidirectional optical semiconductor apparatus | Physics | 0 | Expired |
| US11153452B2 | Document feeding device and image forming apparatus | Electricity | 0 | Active |
| US11216162B2 | Information processing device, information processing method, and recording medium storing program | Physics | 0 | Active |
| US11256411B2 | Interface, character input guide method, and program | Physics | 0 | Active |
| US11322908B2 | Nitride light emitter | Electricity | 0 | Active |
| US11379107B2 | Display device, display method, and program | Electricity | 0 | Active |
| US12119611B2 | Semiconductor laser apparatus and semiconductor laser device | Electricity | 0 | Active |
| US5783647A | 1,1,2,2-tetramethylpropylperoxy esters and method for preparing vinyl polymers | Chemistry; Metallurgy | 0 | Expired |
| US12308605B2 | Semiconductor laser module | Electricity | 0 | Active |
| US5728857A | Silicon-containing peroxyesters | Chemistry; Metallurgy | 0 | Expired |
| US12212115B2 | Semiconductor light-emitting apparatus and method of fabricating semiconductor light-emitting apparatus | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.