Hiroaki Usui
20Patents
5h-index
40Co-inventors
69Inventor score
Filing activity: Feb 18, 1988 → Apr 8, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4857365A | Method of manufacturing modified wood material | Performing Operations; Transporting | 19 | Expired |
| US7898123B2 | Permanent magnet type rotary machine | Electricity | 15 | Active |
| US5143748A | Timber surface improving treatment process | Electricity | 14 | Expired |
| US6403661B1 | Volume reducing agents for expanded polystyrene, methods and apparatus for processing expanded polystyrene using the same | Emerging Cross-Sectional Technologies | 12 | Expired |
| US7896947B2 | Air filtering apparatus | Emerging Cross-Sectional Technologies | 6 | Active |
| US5318802A | Modifying a wood material utilizing formaldehyde polymer and sulfur dioxide | Chemistry; Metallurgy | 3 | Expired |
| US7967900B2 | Air filtering apparatus | Emerging Cross-Sectional Technologies | 2 | Active |
| US8689577B2 | Indoor unit, air conditioner including indoor unit and method of controlling air conditioner | Emerging Cross-Sectional Technologies | 1 | Active |
| US8922077B2 | Outer rotor-type motor | Electricity | 1 | Active |
| US7875108B2 | Inactivating device for virus, bacteria, etc. and air conditioner using the same | Emerging Cross-Sectional Technologies | 1 | Active |
| US7850769B2 | Air filtering apparatus having foreign material removing mechanism | Emerging Cross-Sectional Technologies | 1 | Active |
| US10184602B2 | Connecting piping and steam turbine system | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US10115982B2 | Fuel cell system and fuel cell system module | Emerging Cross-Sectional Technologies | 0 | Active |
| US7857897B2 | Air filtering apparatus | Emerging Cross-Sectional Technologies | 0 | Active |
| US8695361B2 | Indoor unit, air conditioner including indoor unit and method of controlling air conditioner | Emerging Cross-Sectional Technologies | 0 | Active |
| US7621724B2 | Stator for solenoid pumps | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US7633191B2 | Multiphase step motor | Electricity | 0 | Active |
| US9991541B2 | Microbial fuel cell | Emerging Cross-Sectional Technologies | 0 | Active |
| US10323631B2 | Electric pump | Electricity | 0 | Active |
| US5342651A | Method for manufacturing modified wood | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.