US3258633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High density plasma generator
Assignee: —
•
Filing: —
•
Granted: 1966-06-28
•
Expires: 1983-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:42
CPC Classifications
H; H05; H05H; H05H1/00; H05H1/24; H05H1/46; H05H1/4645; H05H1/466
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
APPARATUS FOR PRODUCING A CONFINED PLASMA HAVING AN ION DENSITY GREATER THAN 1014 IONS/CM.3 AND AN IONIZATION GREATER THAN 10 PERSENT, COMPRISING: (A) A HOLLOW ANODE; (B) A THERMIONIC CATHODE FACING EACH END OF SAID ANODE; (C) A GAS-TIGHT ENVELOPE ENCLOSING SAID ANODE AND CATHODES: (D) MEANS FOR PRODUCING A QUANTITY OF METAL VAPOR IN SAID ENVELOPE; (E) AT LEAST PORTIONS OF THE INNER SURFACE OF SAID ANODE HAVING AN ELECTRON WORK FUNCTION HIGHER THAN THE IONIZATION POTENTIAL OF SAID VAPOR (F) MEANS FOR HEATING SAID ANODE SURFACE TO IONIZESAID VAPOR BY CONTACT WITH SAID SURFACE PORTIONS;
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) | 1969-06-27 | 1969-12-27 | 1970-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-27 | 1973-12-27 | 1974-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $7700.00 | Window Closed / Lapsed |