Patent US2735942A successfully refreshed from Google Patents.
US2735942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
brubaker
Assignee: —
•
Filing: —
•
Granted: 1956-02-21
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Expires: 1973-02-21
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:05
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/34; H01J49/36; H01J49/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
IN A MASS SPECTROMETER THE COMBINATION COMPRISING AN ANALYZER CHAMBER, MEANS FOR IONIZING A GAS ADMITTED TO THE CHAMBER WITHIN A RESTRICTED REGION OF THE CHAMBER, MEANS FOR PRODUCING A HIGH FREQUENCY ELECTRICAL FIELD ACROSS THE CHAMBER, MEANS FOR PRODUCING A NON-UNIFORM MAGNETIC FIELD ACROSS THE CHAMBER TRANSVERSE TO THE ELECTRICAL FIELD, THE STRENGTH OF THE MAGNETIC FIELD BEING AT A MAXIMUM IN A CENTRAL REGION OF THE ANALYZER CHAMBER AND DECREASING OUTWARDLY THEREOF IN THE DIRECTION OF THE ELECTRICAL FIELD, AND A COLLECTOR ELECTRODE DISPOSED IN THE CHAMBER AND SPACED FROM THE REGION OF ION FORMATION.
Claim 2
Dependent Claim
97 words
IN A MASS SPECTROMETER THE COMBINATION COMPRISING AN ANALYZER CHAMBER, MEANS FOR IONIZING A GAS ADMITTED TO THE CHAMBER WITHIN A RESTRICTED REGION OF THE CHAMBER, MEANS FOR PRODUCING A HIGH FREQUENCY ELECTRICAL FIELD ACROSS THE CHAMBER, MEANS FOR PRODUCING A NON-UNIFORM MAGNETIC FIELD ACROSS THE CHAMBER TRANSVERSE TO THE ELECTRICAL FIELD, THE STRENGTH OF THE MAGNETIC FIELD BEING AT A MAXIMUM IN A CENTRAL REGION OF THE ANALYZER CHAMBER AND DECREASING OUTWARDLY THEREOF IN THE DIRECTION OF THE ELECTRICAL FIELD, AND A COLLECTOR ELECTRODE DISPOSED IN THE CHAMBER AND SPACED FROM THE REGION OF ION FORMATION.
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) | 1959-02-20 | 1959-08-22 | 1960-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-20 | 1963-08-22 | 1964-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-20 | 1967-08-22 | 1968-02-21 | $7700.00 | Window Closed / Lapsed |