David N. Klein
18Patents
7h-index
13Co-inventors
63Inventor score
Filing activity: Oct 21, 1998 → Jul 13, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6051957A | Battery pack having a state of charge indicator | Emerging Cross-Sectional Technologies | 52 | Expired |
| US8373387B2 | USB inductive charger | Electricity | 29 | Active |
| US8378632B2 | Circuit arrangement with multiple batteries | Electricity | 25 | Active |
| US6232782A | On cell circumferential battery indicator | Emerging Cross-Sectional Technologies | 21 | Expired |
| US9071073B2 | Household device continuous battery charger utilizing a constant voltage regulator | Electricity | 19 | Active |
| US7038333B2 | Hybrid power supply | Electricity | 15 | Expired |
| US6291096A | Pass/fail battery indicator and tester | Emerging Cross-Sectional Technologies | 13 | Expired |
| US7932634B2 | Fuel cell hybrid power supply | Emerging Cross-Sectional Technologies | 7 | Active |
| US8018204B2 | Compact ultra fast battery charger | Electricity | 6 | Active |
| US9762069B2 | Multi-use fast rate charging stand | Electricity | 4 | Active |
| USD878295S1 | Battery tab | General | 4 | Active |
| US7482091B2 | Fuel cartridge interconnect for portable fuel cells | Emerging Cross-Sectional Technologies | 3 | Expired |
| USD900744S1 | Battery tab | General | 2 | Active |
| USD900028S1 | Battery tab | General | 0 | Active |
| US7862926B2 | Fuel cartridge interconnect for portable fuel cells | Emerging Cross-Sectional Technologies | 0 | Active |
| US7646174B2 | Battery low-voltage cutoff circuit | Electricity | 0 | Active |
| US11101514B2 | Removable tab and battery assembly having the same | Emerging Cross-Sectional Technologies | 0 | Active |
| US11621451B2 | Removable tab and battery assembly having the same | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.