Masahiko Shimada
54Patents
8h-index
80Co-inventors
81Inventor score
Filing activity: Sep 8, 1977 → Aug 31, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6592663B1 | Production of a GaN bulk crystal substrate and a semiconductor device formed on a GaN bulk crystal substrate | Emerging Cross-Sectional Technologies | 87 | Expired |
| US6949140B2 | Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device | Emerging Cross-Sectional Technologies | 27 | Expired |
| US7008783B1 | Gene encoding chondroitinase ABC and uses therefor | Chemistry; Metallurgy | 22 | Expired |
| US6780239B2 | Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device | Chemistry; Metallurgy | 20 | Expired |
| US7001457B2 | Crystal growth method, crystal growth apparatus, group-III nitride crystal and group-III nitride semiconductor device | Emerging Cross-Sectional Technologies | 16 | Expired |
| US7261775B2 | Methods of growing a group III nitride crystal | Emerging Cross-Sectional Technologies | 11 | Expired |
| US7250640B2 | Production of a GaN bulk crystal substrate and a semiconductor device formed on a GaN bulk crystal substrate | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4977201A | Polyvinyl chloride plastisol composition | Chemistry; Metallurgy | 8 | Expired |
| US7531038B2 | Crystal growth method | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7508003B2 | Production of a GaN bulk crystal substrate and a semiconductor device formed thereon | Emerging Cross-Sectional Technologies | 5 | Active |
| US5446017A | Superconductive copper-containing oxide materials of the formula A.sub.p B.sub.q Cu.sub.2 O.sub.4.+-.r | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4794798A | Device for measuring Young's modulus and internal friction of specimen | Physics | 3 | Expired |
| US7828896B2 | Methods of growing a group III nitride crystal | Emerging Cross-Sectional Technologies | 3 | Active |
| US4447362A | Process for the production of coenzyme Q | Human Necessities | 3 | Expired |
| US8614048B2 | Resin, resist composition and method for producing resist pattern | Physics | 2 | Active |
| US9671691B2 | Resin, resist composition and method for producing resist pattern | Physics | 2 | Active |
| US9214304B2 | Switch unit | Electricity | 2 | Active |
| US8591647B2 | Production of a GaN bulk crystal substrate and a semiconductor device formed thereon | Emerging Cross-Sectional Technologies | 1 | Active |
| US11358607B2 | Vehicle control device | Performing Operations; Transporting | 1 | Active |
| US8623138B2 | Crystal growth apparatus | Emerging Cross-Sectional Technologies | 1 | Active |
| US9221785B2 | Salt and photoresist composition containing the same | Physics | 1 | Active |
| US10800324B2 | Auto cancel mechanism for turn signal switch device | Electricity | 1 | Active |
| US8569211B2 | Method of applying a herbicidal composition | Human Necessities | 1 | Active |
| US11453329B2 | Vehicular light switch and vehicular light system | Performing Operations; Transporting | 1 | Active |
| US10960879B2 | Vehicle control system, vehicle control method, and vehicle control program | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.