Patent US3129157A successfully refreshed from Google Patents.
US3129157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Space-charge field precipitation method
Assignee: Northrop Grumman Guidance and Electronics Co Inc
•
Filing: 1960-06-15
•
Granted: 1964-04-14
•
Expires: 1980-06-15
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Loeckenhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:32
CPC Classifications
B; B03; B03C; B03C5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A SPACE-CHARGE PRECIPITATION METHOD FOR PARTICLELADEN LIQUID, WHICH COMPRISES IN SEQUENCE THE STEPS OF PASSING SAID LIQUID THROUGH IONIZING MEANS TO PROVIDE IONS IN SAID LIQUID WHICH ELECTRICALLY CHARGE THE PARTICLES TO BE PRECIPITATED AND PROVIDE A SPACE CHARGE IN SAID LIQUID, PASSING SAID LIQUID THROUGH A DIELECTRIC CONDUIT WITH A VELOCITY SUFFICIENT TO MOVE THE CHARGED PARTICLES AWAY FROM SAID IONIZING MEANS TO SAID DIELECTRIC CONDUIT SO THAT THE CHARGED PARTICLES ARE COLLECTED ON THE INNER SURFACES OF THE DIELECTRIC CONDUIT, AND WITHDRAWING THE RELATIVELY PARTICLE-FREE LIQUID FROM SAID CONDUIT.
Claim 2
Dependent Claim
91 words
A SPACE-CHARGE PRECIPITATION METHOD FOR PARTICLELADEN LIQUID, WHICH COMPRISES IN SEQUENCE THE STEPS OF PASSING SAID LIQUID THROUGH IONIZING MEANS TO PROVIDE IONS IN SAID LIQUID WHICH ELECTRICALLY CHARGE THE PARTICLES TO BE PRECIPITATED AND PROVIDE A SPACE CHARGE IN SAID LIQUID, PASSING SAID LIQUID THROUGH A DIELECTRIC CONDUIT WITH A VELOCITY SUFFICIENT TO MOVE THE CHARGED PARTICLES AWAY FROM SAID IONIZING MEANS TO SAID DIELECTRIC CONDUIT SO THAT THE CHARGED PARTICLES ARE COLLECTED ON THE INNER SURFACES OF THE DIELECTRIC CONDUIT, AND WITHDRAWING THE RELATIVELY PARTICLE-FREE LIQUID FROM SAID CONDUIT.
References Cited (Backward Citations)
US2582903A
Cited
US1931725A
Cited
US2553944A
Cited
US2837654A
Cited
US2795290A
Cited
US2817413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |