Hitachi Home and Life Solutions, Inc.
8Patents
0Active
8Granted
30Portfolio score
Filing activity: Feb 25, 2003 → Feb 14, 2006
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7064967B2 | Fuel cell system and control method | Emerging Cross-Sectional Technologies | 176 | Expired |
| US7515991B2 | Self-propelled cleaning device and method of operation thereof | Human Necessities | 163 | Expired |
| US7418762B2 | Self-propelled cleaning device and charger using the same | Human Necessities | 147 | Expired |
| US7207083B2 | Electric vacuum cleaner | Emerging Cross-Sectional Technologies | 32 | Expired |
| US7064514B2 | Motor drive system for AC motors | Electricity | 20 | Expired |
| US7276099B2 | Electric vacuum cleaner | Emerging Cross-Sectional Technologies | 18 | Expired |
| US7074023B2 | Scroll compressor | Mechanical Engineering; Lighting; Heating | 0 | Expired |
| US7033150B2 | Hermetic type compressor | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.