Hiroaki Hata
31Patents
14h-index
64Co-inventors
84Inventor score
Filing activity: Jan 10, 1986 → Mar 18, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6152714A | Displacement type fluid machine having rotation suppression of an orbiting displacer | Mechanical Engineering; Lighting; Heating | 45 | Expired |
| US4726738A | Motor-driven compressor provided with torque control device | Mechanical Engineering; Lighting; Heating | 35 | Expired |
| US4992715A | Torque control apparatus for rotating motor machine | Physics | 34 | Expired |
| US5964581A | Refrigerant compressor | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5711165A | Refrigerating apparatus and refrigerant compressor | Emerging Cross-Sectional Technologies | 30 | Expired |
| US5230616A | Rotary compressor with shaft balancers | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4915554A | Hermetic rotary compressor with balancing weights | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US4736143A | Torque control apparatus for rotary machine | Emerging Cross-Sectional Technologies | 23 | Expired |
| US5553465A | Refrigeration apparatus containing lubricant composition | Mechanical Engineering; Lighting; Heating | 22 | Expired |
| US5314318A | Horizontal multi-cylinder rotary compressor | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US6029459A | Refrigeration cycle | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6258293A | Refrigeration cycle | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5445753A | Lubricant for refrigeration compressors | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US6352418B1 | Displacement type fluid machine | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US8162162B2 | Resin-made storage container | Performing Operations; Transporting | 14 | Active |
| US5417872A | Lubricant composition, refrigeration apparatus containing same and process for operating the apparatus | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US5540061A | Refrigerator | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US5494423A | Rotary compressor and blade tip structure | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6217303A | Displacement fluid machine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6099279A | Displacement fluid machine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US6179593A | Displacement fluid machine | Mechanical Engineering; Lighting; Heating | 6 | Expired |
| US8717941B2 | Communication method, mobile agent device, and home agent device | Electricity | 4 | Active |
| US6406279B2 | Displacement type fluid machine | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US6164941A | Displacement type fluid machine having an orbiting displacer forming a plurality of spaces | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US6183228A | Displacement type fluid machine | Mechanical Engineering; Lighting; Heating | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.