ELNA CO., LTD.
25Patents
2Active
25Granted
33Portfolio score
Filing activity: May 11, 1976 → Aug 18, 2016
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4862328A | Electric double layer capacitor | Emerging Cross-Sectional Technologies | 138 | Expired |
| US4725927A | Electric double layer capacitor | Emerging Cross-Sectional Technologies | 53 | Expired |
| US4725926A | Electric double layer capacitor having high capacity | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5604426A | Electric apparatus with a power supply including an electric double layer capacitor | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6174070A | Portable lighting instrument having a light emitting diode assembly | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4858078A | Solid electrolytic capacitor | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4734821A | Electrolytic capacitor | Electricity | 26 | Expired |
| US5795680A | Non-aqueous electrolyte type secondary battery | Emerging Cross-Sectional Technologies | 26 | Expired |
| US5545933A | Electric power storage apparatus | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5194127A | Method for etching an aluminum foil for an electrolytic capacitor | Emerging Cross-Sectional Technologies | 9 | Expired |
| USD418812S | Voltage stabilizer | General | 8 | Expired |
| US4740869A | Electrolytic capacitor | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5143587A | Method for etching an aluminum foil for an electrolytic capacitor | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4757424A | Electric double layer capacitor | Emerging Cross-Sectional Technologies | 7 | Expired |
| USD392253S | Electrolytic capacitor | General | 6 | Expired |
| US5942885A | Power compensating device for battery | Electricity | 5 | Expired |
| US4747021A | Electrolytic capacitor | Electricity | 2 | Expired |
| US4105912A | Radar viewing device | Physics | 2 | Expired |
| US4831499A | Electrolytic capacitor | Electricity | 2 | Expired |
| USD390832S | Electronic device | General | 1 | Expired |
| US9496091B2 | Aluminum electrolytic capacitor and rubber seal for same | Electricity | 1 | Active |
| US6510041B1 | Electrolytic capacitor unit for audio apparatus | Electricity | 1 | Expired |
| USD404007S | Electronic device | General | 0 | Expired |
| US4689724A | Electrolytic capacitor | General | 0 | Revoked |
| US9842703B2 | Aluminum electrolytic capacitor and rubber seal for same | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.