Takumi Shibata
29Patents
8h-index
40Co-inventors
75Inventor score
Filing activity: Mar 24, 1998 → Dec 12, 2019
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6225650A | GAN group crystal base member having low dislocation density, use thereof and manufacturing methods thereof | Electricity | 131 | Expired |
| US6525375B1 | Semiconductor device having trench filled up with gate electrode | Electricity | 41 | Expired |
| US6495883B2 | Trench gate type semiconductor device and method of manufacturing | Electricity | 38 | Expired |
| US6630389B2 | Method for manufacturing semiconductor device | Electricity | 19 | Expired |
| US6696323B2 | Method of manufacturing semiconductor device having trench filled up with gate electrode | Electricity | 15 | Expired |
| US7811907B2 | Method for manufacturing semiconductor device and epitaxial growth equipment | Electricity | 14 | Active |
| US7642178B2 | Semiconductor device, method for manufacturing the same and method for evaluating the same | Electricity | 10 | Active |
| US6656794B2 | Method of manufacturing semiconductor device including a memory area and a logic circuit area | Electricity | 10 | Expired |
| US9531227B2 | Stator structure for rotary electric machine | Electricity | 7 | Active |
| US6051212A | Process for producing yeast extract | Human Necessities | 5 | Expired |
| US8097511B2 | Semiconductor device having P-N column layer and method for manufacturing the same | Electricity | 5 | Active |
| US9899888B2 | Coil structure for rotary electric machine | Electricity | 3 | Active |
| US8604565B2 | Physical quantity detection device and method for manufacturing the same | Physics | 2 | Active |
| US7364980B2 | Manufacturing method of semiconductor substrate | Electricity | 2 | Active |
| US8853089B2 | Manufacturing method of semiconductor substrate | Electricity | 2 | Active |
| US6812097B2 | Method for manufacturing non-volatile memory device | Emerging Cross-Sectional Technologies | 2 | Expired |
| US7692241B2 | Semiconductor device | Electricity | 1 | Active |
| US6943082B2 | Method for manufacturing a nonvolatile memory device | Electricity | 1 | Expired |
| US7517771B2 | Method for manufacturing semiconductor device having trench | Electricity | 1 | Active |
| US8501598B2 | Semiconductor substrate, semiconductor device, and method of producing semiconductor substrate | Electricity | 1 | Active |
| US7905303B2 | Legged locomotion robot | Performing Operations; Transporting | 1 | Active |
| US7915671B2 | Semiconductor device having super junction structure | Electricity | 0 | Active |
| US9843232B2 | Rotary electric machine | Electricity | 0 | Active |
| US6726800B2 | Ashing apparatus, ashing methods, and methods for manufacturing semiconductor devices | Electricity | 0 | Expired |
| US8349693B2 | Method of manufacturing a semiconductor device having a super junction | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.