Oneac Corporation
28Patents
0Active
28Granted
35Portfolio score
Filing activity: Oct 24, 1980 → Dec 19, 2001
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5357568A | Telephone line overvoltage protection method and apparatus | Electricity | 74 | Expired |
| USD339101S | Uninterruptible power supply controller | General | 43 | Expired |
| US4758920A | Telephone and data overvoltage protection apparatus | Electricity | 37 | Expired |
| US4941063A | Telephone lines overvoltage protection apparatus | Electricity | 32 | Expired |
| US4455586A | High voltage filtering and protection circuit | Electricity | 31 | Expired |
| US5359657A | Telephone line overvoltage protection apparatus | Electricity | 28 | Expired |
| US4623834A | Dual programmable response time constants for electronic tap switching line regulators | Physics | 26 | Expired |
| US5874788A | External backup power supply | Electricity | 26 | Expired |
| US4916438A | Battery charging, monitoring and alarm circuit | Physics | 25 | Expired |
| US4860145A | Tap switching protection circuit | Electricity | 24 | Expired |
| US5410443A | Telephone line overvoltage protection | Electricity | 24 | Expired |
| US4878145A | Surge/transient protector for a plurality of data lines | Electricity | 21 | Expired |
| US5027285A | Power line waveform measurement system | Physics | 17 | Expired |
| US5490215A | Telecommunications T1 carrier overvoltage and fiber to curb power protector | Electricity | 12 | Expired |
| US5905623A | Telephone and data overvoltage protection apparatus including a longitudinal transformer | Electricity | 11 | Expired |
| US4725739A | AC branch power distribution filter | Electricity | 10 | Expired |
| US5696820A | Telephone and data communications line conditioner system | Electricity | 10 | Expired |
| US6639779B2 | Frequency selective transient voltage protector | Electricity | 8 | Expired |
| US5272594A | Telephone line overvoltage protection device having aligned, bent terminals supporting a circuit board | Electricity | 8 | Expired |
| USD335863S | Terminal cap for a battery | General | 6 | Expired |
| US4940947A | Line noise signal measurement system using analog signal compression with digital linearity correction | Physics | 6 | Expired |
| US5883953A | Telephone and data communications line protection module and grounding spring clip | Electricity | 6 | Expired |
| US5677820A | Telephone and communications line overvoltage protection apparatus | Electricity | 5 | Expired |
| US4352055A | AC Variable voltage source utilizing pulse width modulation | Electricity | 5 | Expired |
| US5210937A | Method of forming a telephone line overvoltage protection device | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.