US2733343A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ionization source
Assignee: —
•
Filing: —
•
Granted: 1956-01-31
•
Expires: 1973-01-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:45
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/02; H01J49/10; H01J49/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A SOURCE OF IONS COMPRISING IN COMBINATION, AN IONIZATION FILAMENT, AN EVAPORATION FILAMENT ADAPTED TO BE COATED WITH THE MATERIAL TO BE IONIZED, MEANS TO MOUNT SAID FILAMENTS IN ADJACENT RELATIONSHIP, SAID FILAMENTS BEING SPACED BY AN AVERAGE DISTANCE EQUAL TO NOT MORE THAN TWICE THE WIDTH OF THE IONIZATION FILAMENT CONFRONTING EVAPORATION FILAMENT.
Claim 2
Dependent Claim
54 words
A SOURCE OF IONS COMPRISING IN COMBINATION, AN IONIZATION FILAMENT, AN EVAPORATION FILAMENT ADAPTED TO BE COATED WITH THE MATERIAL TO BE IONIZED, MEANS TO MOUNT SAID FILAMENTS IN ADJACENT RELATIONSHIP, SAID FILAMENTS BEING SPACED BY AN AVERAGE DISTANCE EQUAL TO NOT MORE THAN TWICE THE WIDTH OF THE IONIZATION FILAMENT CONFRONTING EVAPORATION FILAMENT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-30 | 1959-08-01 | 1960-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-30 | 1963-08-01 | 1964-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-30 | 1967-08-01 | 1968-01-31 | $7700.00 | Window Closed / Lapsed |