Masaru Kubo
29Patents
9h-index
28Co-inventors
75Inventor score
Filing activity: Nov 12, 1991 → Mar 30, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5177581A | Light receiving PN junction semiconductor device with silicon nitride film | Electricity | 31 | Expired |
| US8390793B2 | Optical ranging sensor and electronic equipment | Physics | 26 | Active |
| US6114740A | Circuit-integrating light-receiving element | Electricity | 22 | Expired |
| US5602415A | Light receiving device with isolation regions | Electricity | 22 | Expired |
| US6380603B1 | Photosensitive device with internal circuitry that includes on the same substrate | Electricity | 19 | Expired |
| US5466962A | Light-receiving semiconductor device with plural buried layers | Electricity | 18 | Expired |
| US6433366B1 | Circuit-incorporating light receiving device and method of fabricating the same | Electricity | 15 | Expired |
| US7995189B2 | Optical distance measuring sensor and electronic device | Physics | 11 | Active |
| US6127715A | Photodetector element containing circuit element and manufacturing method thereof | Electricity | 10 | Expired |
| US6448614B2 | Circuit-incorporating photosensitive device | Electricity | 9 | Expired |
| US6949809B2 | Light receiving element, light detector with built-in circuitry and optical pickup | Physics | 8 | Expired |
| US6049117A | Light-receiving element | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6313484A | Circuit-integrated light-receiving device | Electricity | 5 | Expired |
| US6492702B2 | Circuit-incorporating light receiving device | Emerging Cross-Sectional Technologies | 5 | Expired |
| US9461158B2 | Heterojunction field effect transistor | Electricity | 4 | Active |
| US6005278A | Divided photodiode | Electricity | 3 | Expired |
| US7157747B2 | Bidirectional photothyristor chip, light-fired coupler and solid state relay | Electricity | 3 | Expired |
| US9859411B2 | Field effect transistor | Electricity | 3 | Active |
| US8780330B2 | Optical distance-measuring device and electronic device | Physics | 2 | Active |
| US6404029B1 | Light sensitive element and light sensitive element having internal circuitry | Electricity | 2 | Expired |
| US9086480B2 | Optical distance-measuring device and electronic device | Physics | 1 | Active |
| US8373128B2 | Optical ranging sensor and electronic device | Physics | 1 | Active |
| US10332976B2 | Nitride semiconductor device | Electricity | 1 | Active |
| US6995408B2 | Bidirectional photothyristor chip | Electricity | 1 | Expired |
| US7655982B2 | Output control device, and AC/DC power source device, circuit device, LED backlight circuit device, and switching DC/DC converter device each using output control device | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.