Hiroyuki Tokunaga
99Patents
21h-index
76Co-inventors
91Inventor score
Filing activity: Apr 30, 1990 → Mar 30, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6875327B1 | Biosensor, method of forming thin-film electrode, and method and apparatus for quantitative determination | Emerging Cross-Sectional Technologies | 168 | Expired |
| US7122111B2 | Sample discriminating method | Emerging Cross-Sectional Technologies | 167 | Expired |
| US7232510B2 | Biosensor, measuring instrument for biosensor, and method of quantifying substrate | Physics | 157 | Expired |
| US6911131B2 | Biosensor | Chemistry; Metallurgy | 141 | Expired |
| US6881322B2 | Measuring device using biosensor and biosenor used for it, and dedicated standard liquid | Physics | 133 | Expired |
| US5774819A | Vehicle steering control system | Performing Operations; Transporting | 95 | Expired |
| US5281283A | Group III-V compound crystal article using selective epitaxial growth | Emerging Cross-Sectional Technologies | 77 | Expired |
| US6824670B2 | Sample discriminating method | Emerging Cross-Sectional Technologies | 63 | Expired |
| US5845222A | Vehicle steering control system | Performing Operations; Transporting | 58 | Expired |
| US5925082A | Vehicle steering control system with driver alertness determination | Performing Operations; Transporting | 57 | Expired |
| US5010033A | Process for producing compound semiconductor using an amorphous nucleation site | Emerging Cross-Sectional Technologies | 53 | Expired |
| US5907277A | Device for detecting a counter-steer condition | Performing Operations; Transporting | 44 | Expired |
| US6018691A | Vehicle steering system | Performing Operations; Transporting | 43 | Expired |
| US6155377A | Variable gear ratio steering system | Emerging Cross-Sectional Technologies | 35 | Expired |
| US8142629B2 | Biosensor, thin film electrode forming method, quantification apparatus, and quantification method | Emerging Cross-Sectional Technologies | 34 | Active |
| US5130103A | Method for forming semiconductor crystal and semiconductor crystal article obtained by said method | Emerging Cross-Sectional Technologies | 30 | Expired |
| US8392066B2 | Electric power-assist steering system | Performing Operations; Transporting | 29 | Active |
| US5996724A | Steering control system | Performing Operations; Transporting | 26 | Expired |
| US7507148B2 | Polishing apparatus, polishing head and polishing method | Performing Operations; Transporting | 23 | Expired |
| US6154265A | Liquid crystal device and production process thereof | Physics | 22 | Expired |
| US5481457A | Vehicle steering system | Performing Operations; Transporting | 22 | Expired |
| US5904223A | Electric power steering system | Performing Operations; Transporting | 21 | Expired |
| US5448482A | Vehicle steering system | Performing Operations; Transporting | 20 | Expired |
| US5703775A | Vehicle steering control system | Performing Operations; Transporting | 19 | Expired |
| US5838409A | Liquid crystal device substrate, liquid crystal device, and method and apparatus for manufacturing the same | Electricity | 18 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.