US3716754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for de-electrifying insulative materials
Assignee: Individual
•
Filing: 1971-09-10
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Granted: 1973-02-13
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Expires: 1991-09-10
Abstract
Abstract METHOD AND APPARATUS FOR DE-ELECTRIFYING INSULATIVE MATERIAL MOVING PAST IONIZING ELECTRODES BY SUPPLYING A DE-ELECTRIFYING WAVEFORM HAVING AN IONIZATION PORTION AND A DAMPED PORTION TO THE IONIZING ELECTRODES. THE IONIZATION PORTION OF THE DE-ELECTRIFYING WAVEFORM INCLUDES ALTERNATE POLARITY PULSES HAVING AN AMPLITUDE TO IONIZE A GASEOUS MEDIUM SURROUNDING THE IONIZING ELECTRODES, AND THE DAMPED PORTION OF THE DE-ELECTRIFYING WAVEFORM HAS AN AMPLITUDE INSUFFICIENT TO IONIZE THE GASEOUS MEDIUM. D R A W I N G
Inventors
- 👤 G Weber
- 👤 P Deshayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:08
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H05; H05F; H05F3/00; H05F3/04
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |