ESB Incorporated
63Patents
0Active
63Granted
37Portfolio score
Filing activity: Apr 7, 1972 → Apr 18, 1981
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4070528A | Battery having porous inherently sealable separator | Electricity | 68 | Expired |
| US4206398A | Method of and apparatus for detecting ground faults in isolated power supply systems | Physics | 48 | Expired |
| US4048405A | High drain rate, primary alkaline cell having a divalent silver oxide/monovalent silver oxide depolarizer blend coated with a layer of silver | Emerging Cross-Sectional Technologies | 37 | Expired |
| US3990439A | Protective breathing apparatus and valve therefor | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4255746A | Emergency lighting and fire detector system | Physics | 36 | Expired |
| US4358892A | Method of producing battery and electrolytic cell electrodes | Emerging Cross-Sectional Technologies | 34 | Expired |
| US4091186A | Dry cell battery having electrical spring contact adhered to terminal | Electricity | 31 | Expired |
| US3978465A | Line isolation monitor | Physics | 29 | Expired |
| US4199754A | Circuit for an emergency lighting and fire detector system | Physics | 27 | Expired |
| US3932764A | Transfer switch and transient eliminator system and method | Electricity | 26 | Expired |
| US4009056A | Primary alkaline cell having a stable divalent silver oxide depolarizer mix | Electricity | 26 | Expired |
| US3966497A | Seawater battery | Electricity | 24 | Expired |
| US4200830A | Series resonant battery charger and control therefor | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4145648A | Polarity indicator for battery charger | Emerging Cross-Sectional Technologies | 21 | Expired |
| US3956022A | Storage battery with carrying device | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4191806A | Pressure vent for a sealed primary cell | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4087697A | Rapid power transfer system | Emerging Cross-Sectional Technologies | 18 | Expired |
| US3983554A | Electric power distribution system including a Master Annunicator and Central Control Unit | Physics | 15 | Expired |
| US4072799A | Vent plug system for batteries | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4015056A | Method of manufacturing a stable divalent silver oxide depolarizer mix | Electricity | 14 | Expired |
| US4075398A | Means of providing pressure relief to sealed galvanic cell | Emerging Cross-Sectional Technologies | 13 | Expired |
| US4078127A | Additive for an alkaline battery employing divalent silver oxide positive active material | Electricity | 12 | Expired |
| US3953238A | Multicell seawater battery | Electricity | 12 | Expired |
| US4079243A | Battery powered lamp assembly | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US3963806A | Reaction product of polyalkylene imine and epoxy, halo, ethylenic substituted difunctional compounds | Emerging Cross-Sectional Technologies | 11 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.