C.E. Niehoff & Co.
64Patents
37Active
64Granted
49Portfolio score
Filing activity: May 28, 1974 → Mar 24, 2022 · 31 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7635922B2 | Power control system and method | Electricity | 954 | Active |
| US6275012A | Alternator with regulation of multiple voltage outputs | Electricity | 40 | Expired |
| US6184661A | Regulator with alternator output current and input drive power control | Electricity | 39 | Expired |
| USD574325S1 | Electrical alternator | General | 39 | Expired |
| US6373230B2 | Alternator with regulation of multiple voltage outputs | Electricity | 38 | Expired |
| USD618615S1 | Electric generator | General | 38 | Expired |
| USD425020S | Electrical alternator | General | 35 | Expired |
| US6924621B2 | System and method for controlling electric load and battery charge in a vehicle | Emerging Cross-Sectional Technologies | 33 | Expired |
| USD398285S | Electrical alternator | General | 27 | Expired |
| US6452363B1 | Multiple battery charge equalizer | Electricity | 26 | Expired |
| US5907233A | Voltage regulator with improved field coil current control system and warning system | Electricity | 21 | Expired |
| USD398286S | Electrical alternator | General | 20 | Expired |
| USD548696S1 | Electrical alternator | General | 19 | Expired |
| USD571291S1 | Motorized actuator | General | 16 | Expired |
| USD563871S1 | Electrical alternator | General | 16 | Expired |
| USD610088S1 | Electrical alternator | General | 16 | Expired |
| USD563870S1 | Electrical alternator | General | 16 | Expired |
| USD587194S1 | Electrical alternator | General | 16 | Expired |
| USD650332S1 | Electric generator | General | 15 | Expired |
| USD618170S1 | Electric generator | General | 15 | Expired |
| US6489753B1 | System and method for monitoring battery equalization | Emerging Cross-Sectional Technologies | 15 | Expired |
| US7157806B2 | System and method for controlling and distributing electrical energy in a vehicle | Emerging Cross-Sectional Technologies | 14 | Expired |
| US7432613B2 | Self-protective high-current low-loss bi-directional semiconductor switch module and method of operation | Physics | 12 | Active |
| USD773995S1 | Electric generator | General | 11 | Active |
| US4963813A | Control providing progressive charging in a dual voltage charging system | Electricity | 11 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.