Patent US3244969A successfully refreshed from Google Patents.
US3244969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron orbiting tubes for ion measurement and gettering pumps
Assignee: Wisconsin Alumni Research Foundation
•
Filing: 1963-12-20
•
Granted: 1966-04-05
•
Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Herb
- 👤 Theodore E Pauly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:15
CPC Classifications
H; H01; H01J; H01J41/00; H01J41/02; H01J41/04; H01J41/12; H01J41/14; H01J41/16; H01J9/00; H01J9/38; H03; H03F; H03F3/00; H03F3/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
AN ELECTRONIC DEVICE, COMPRISING THE COMBINATION OF A HOLLOW GENERALLY CYLINDRICAL BOUNDARY ELECTRODE, A CYLINDRICAL ANODE EXTENDING AXIALLY WITHIN SAID BOUNDARY ELECTRODE, SAID BOUNDARY ELECTRODE BEING SPACED OUTWARDLY FROM SAID ANODE, MEANS FORMING A VACUUM SPACE AROUND SAID ANODE AND WITHIN SAID BOUNDARY ELECTRODE, AN ELONGATED ELECTRON EMITTING CATHODE DISPOSED BETWEEN SAID ANODE AND SAID BOUNDARY ELECTRODE AND GENERALLY PARALLEL TO SAID ANODE, AN ELONGATED SHIELD ELECTRODE POSITIONED BETWEEN SAID CATHODE AND SAID ANODE FOR MODIFYING THE ELECTRIC FIELD THEREBETWEEN WHEREBY THE ELECTRONS EMITTED BY SAID CATHODE ARE GIVEN SUFFICIENT ANGULAR MOMENTUM TO GO INTO ORBITS AROUND SAID ANODE, AND A GENERALLY CYLINDRICAL ION COLLECTOR ELECTRODE COAXIAL WITH SAID BOUNDARY ELECTRODE AND DISPOSED AROUND SAID ANODE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |