Tatsuya Katoh
24Patents
6h-index
26Co-inventors
69Inventor score
Filing activity: Dec 9, 1981 → Aug 19, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4390608A | Layered charge generator/transport electrophotographic photoconductor uses bisazo pigment | Physics | 15 | Expired |
| US4481271A | Layered electrophotographic photoconductor containing a hydrazone | Physics | 13 | Expired |
| USD750581S1 | Light emitting diode | General | 8 | Active |
| US8591760B2 | Ferrite magnetic material, ferrite magnet, and ferrite sintered magnet | Chemistry; Metallurgy | 8 | Active |
| USD690444S1 | Light-emitting diode | General | 7 | Active |
| US5335763A | Spring retainer for clutch piston | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| USD771579S1 | Light emitting diode | General | 4 | Active |
| US8129825B2 | IC chip package employing substrate with a device hole | Electricity | 3 | Active |
| US8344486B2 | Semiconductor device and display apparatus | Electricity | 3 | Active |
| US8576567B2 | Semiconductor device and display apparatus | Electricity | 2 | Active |
| USD771282S1 | Light source | General | 2 | Active |
| US9202613B2 | Ferrite magnetic material, ferrite magnet, and ferrite sintered magnet | Chemistry; Metallurgy | 1 | Active |
| US8193627B2 | IC chip mounting package provided with IC chip located in device hole formed within a package base member | Electricity | 1 | Active |
| US9859482B2 | LED lighting apparatus and method for manufacturing the same | Electricity | 1 | Active |
| US9620684B2 | LED lighting apparatus and method for manufacturing the same | Electricity | 1 | Active |
| US8080823B2 | IC chip package and image display device incorporating same | Electricity | 1 | Active |
| US10785879B2 | Circuit board and production method therefor | Emerging Cross-Sectional Technologies | 0 | Active |
| US8373262B2 | Source driver, method for manufacturing same, and liquid crystal module | Electricity | 0 | Active |
| US10084122B2 | Light-emitting apparatus and method of manufacturing the same | Electricity | 0 | Active |
| US10431721B2 | Light-emitting device and method for manufacturing same | Electricity | 0 | Active |
| US10524365B2 | Ceramic substrate | Emerging Cross-Sectional Technologies | 0 | Active |
| US10375837B2 | Method of manufacturing a ceramic substrate | Emerging Cross-Sectional Technologies | 0 | Active |
| US10367032B2 | Light-emitting apparatus | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10825963B2 | Light-emitting device and method for manufacturing same | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.