Patent US2526777A successfully refreshed from Google Patents.
US2721271A
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Radio frequency mass spectrometer
Assignee: Individual
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Filing: 1954-09-20
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Granted: 1955-10-18
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Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Willard H Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/34; H01J49/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A RADIO FREQUENCY MASS SPECTROMETER TUBE COMPRISING AN ENVELOPE HAVING AN INLET FOR ADMITTING GAS TO BE ANALYZED, SAID ENVELOPE SURROUNDING ALL OF THE FOLLOWING PARTS, AN ION SOURCE, A COLLECTOR ELECTRODE, AND AT LEAST THREE GROUPS OF ELECTRODES DISPOSED BETWEEN THE ION SOURCE AND THE COLLECTOR ELECTRODE, EACH GROUP INCLUDING THREE CLOSELY SPACED ELECTRODES, THE DISTANCES BETWEEN SAID GROUPS BEING LARGE AS COMPARED TO THE DISTANCES BETWEEN THE ELECTRODES OF THE GROUPS THEMSELVES.
Claim 2
Dependent Claim
74 words
A RADIO FREQUENCY MASS SPECTROMETER TUBE COMPRISING AN ENVELOPE HAVING AN INLET FOR ADMITTING GAS TO BE ANALYZED, SAID ENVELOPE SURROUNDING ALL OF THE FOLLOWING PARTS, AN ION SOURCE, A COLLECTOR ELECTRODE, AND AT LEAST THREE GROUPS OF ELECTRODES DISPOSED BETWEEN THE ION SOURCE AND THE COLLECTOR ELECTRODE, EACH GROUP INCLUDING THREE CLOSELY SPACED ELECTRODES, THE DISTANCES BETWEEN SAID GROUPS BEING LARGE AS COMPARED TO THE DISTANCES BETWEEN THE ELECTRODES OF THE GROUPS THEMSELVES.
References Cited (Backward Citations)
US2535032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-17 | 1959-04-18 | 1959-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-17 | 1963-04-18 | 1963-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-17 | 1967-04-18 | 1967-10-18 | $7700.00 | Window Closed / Lapsed |