Hiroyuki Kawata
87Patents
9h-index
101Co-inventors
81Inventor score
Filing activity: May 8, 1990 → Dec 21, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7207187B2 | Inverter-integrated motor for an automotive vehicle | Electricity | 55 | Expired |
| US5243525A | Suspension control system | Performing Operations; Transporting | 40 | Expired |
| US7009318B2 | Electric refrigeration compressor having a cooling system for an electrical circuit | Mechanical Engineering; Lighting; Heating | 23 | Expired |
| US7081691B2 | Switching device for controlling large amount of current | Electricity | 23 | Expired |
| US5175687A | Suspension control system | Performing Operations; Transporting | 17 | Expired |
| US8951366B2 | High-strength cold-rolled steel sheet and method of manufacturing thereof | Chemistry; Metallurgy | 16 | Active |
| US5069476A | Suspension control system | Performing Operations; Transporting | 13 | Expired |
| US5013955A | Drive system of actuator having piezoelectric device for use in motor vehicle | Performing Operations; Transporting | 13 | Expired |
| US9359004B2 | Driver unit and electric power steering device including the driver unit | Electricity | 11 | Active |
| US8993120B2 | High-strength hot-dip galvanized steel sheet having excellent delayed fracture resistance and manufacturing method thereof | Emerging Cross-Sectional Technologies | 9 | Active |
| US8932729B2 | High-strength hot-dip galvanized steel sheet excellent in impact resistance property and high-strength alloyed hot-dip galvanized steel sheet | Emerging Cross-Sectional Technologies | 8 | Active |
| US9479025B2 | Drive device and electric power steering device including the drive device | Electricity | 8 | Active |
| US6645859B1 | Semiconductor device and manufacturing method thereof | Electricity | 8 | Expired |
| US5142477A | Suspension control system | Performing Operations; Transporting | 8 | Expired |
| US7154184B2 | Interconnection structure of semiconductor device | Electricity | 7 | Expired |
| US9896751B2 | High strength steel sheet and high strength galvanized steel sheet excellent in shapeability and methods of production of same | Emerging Cross-Sectional Technologies | 6 | Active |
| US9162422B2 | High-strength hot-dip galvanized steel sheet, high-strength alloyed hot-dip galvanized steel sheet excellent in bake hardenability, and manufacturing method thereof | Emerging Cross-Sectional Technologies | 6 | Active |
| US9473004B2 | Drive device and electric power steering device including the drive device | Electricity | 5 | Active |
| US10351937B2 | High-strength steel sheet excellent in impact resistance and manufacturing method thereof, and high-strength galvanized steel sheet and manufacturing method thereof | Emerging Cross-Sectional Technologies | 4 | Active |
| US6544904B1 | Method of manufacturing semiconductor device | Electricity | 4 | Expired |
| US11274356B2 | Steel sheet, hot-dip galvanized steel sheet and galvannealed steel sheet | Chemistry; Metallurgy | 4 | Active |
| US8962149B2 | Spot welded joint | Emerging Cross-Sectional Technologies | 4 | Active |
| US9610648B2 | Spot welded joint and spot welding method | Emerging Cross-Sectional Technologies | 3 | Active |
| US9234268B2 | High-strength galvanized steel sheet excellent in bendability and manufacturing method thereof | Emerging Cross-Sectional Technologies | 3 | Active |
| US9702035B2 | High-strength hot-dip galvanized steel sheet excellent in impact resistance property and manufacturing method thereof, and high-strength alloyed hot-dip galvanized steel sheet and manufacturing method thereof | Emerging Cross-Sectional Technologies | 3 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.