Per Onnerud
27Patents
10h-index
23Co-inventors
71Inventor score
Filing activity: Feb 10, 1997 → Nov 15, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7245108B2 | System and method for balancing state of charge among series-connected electrical energy storage units | Emerging Cross-Sectional Technologies | 76 | Expired |
| US7378818B2 | Bidirectional power converter for balancing state of charge among series connected electrical energy storage units | Emerging Cross-Sectional Technologies | 74 | Expired |
| US7193392B2 | System and method for determining and balancing state of charge among series connected electrical energy storage units | Emerging Cross-Sectional Technologies | 72 | Expired |
| US7381496B2 | Lithium metal oxide materials and methods of synthesis and use | Emerging Cross-Sectional Technologies | 52 | Active |
| US5958573A | Electroluminescent device having a structured particle electron conductor | Emerging Cross-Sectional Technologies | 37 | Expired |
| US6921609B2 | Gradient cathode material for lithium rechargeable batteries | Emerging Cross-Sectional Technologies | 25 | Expired |
| US7811708B2 | Lithium-ion secondary battery | Emerging Cross-Sectional Technologies | 23 | Active |
| USD631833S1 | Battery pack | General | 12 | Expired |
| US7656125B2 | Method and device for controlling a storage voltage of a battery pack | Emerging Cross-Sectional Technologies | 11 | Active |
| US8071233B2 | Integrated current-interrupt device for lithium-ion cells | Emerging Cross-Sectional Technologies | 10 | Active |
| US6855461B2 | Cathode material for lithium rechargeable batteries | Emerging Cross-Sectional Technologies | 8 | Expired |
| USD631832S1 | Battery pack | General | 8 | Expired |
| US8012615B2 | CID retention device for Li-ion cell | Emerging Cross-Sectional Technologies | 8 | Active |
| US8084998B2 | Method and device for controlling a storage voltage of a battery pack | Emerging Cross-Sectional Technologies | 8 | Active |
| US9166206B2 | Prismatic storage battery or cell with flexible recessed portion | Emerging Cross-Sectional Technologies | 7 | Active |
| USD631825S1 | Battery pack | General | 7 | Expired |
| US7838143B2 | CID retention device for Li-ion cell | Emerging Cross-Sectional Technologies | 7 | Active |
| US7811707B2 | Lithium-ion secondary battery | Emerging Cross-Sectional Technologies | 7 | Active |
| USD631830S1 | Battery pack | General | 6 | Expired |
| USD631828S1 | Battery pack | General | 6 | Expired |
| USD631827S1 | Battery pack | General | 6 | Expired |
| US8679670B2 | CID retention device for Li-ion cell | Emerging Cross-Sectional Technologies | 5 | Active |
| USD631831S1 | Battery pack | General | 5 | Expired |
| USD631826S1 | Battery pack | General | 5 | Expired |
| US9252399B2 | Prismatic storage battery or cell with flexible recessed portion | Emerging Cross-Sectional Technologies | 4 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.