Patent US3174034A successfully refreshed from Google Patents.
US3174034A
Expired / Lapsed
US
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Mass spectrometer
Assignee: Institut fuer Plasmaphysik GmbH
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Filing: 1962-07-02
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Granted: 1965-03-16
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Behrisch Rainer
- 👤 Erich W Blauth
- 👤 Melzner Friedhelm
- 👤 Erwin H Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:30
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/26; H01J49/34; H01J49/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A MASS SPECTROMETER, THE COMBINATION WHICH COMPRISES: A VACUUM-TIGHT ENVELOPE, A PERIODICALLY MODULATED ION SOURCE, AND MEANS FOR PRODUCING A TROUGHLIKE ELECTRIC POTENTIAL DISTRIBUTION IN THAT ENVELOPE AND INCORPORATING, A SUBSTANTIALLY CYLINDRICAL ELECTRODE, MEANS FOR POSITIVELY BIASING SAID CYLINDRICAL ELECTRODE WITH RESPECT TO THE MINIMUM OF SAID POTENTIAL DISTRIBUTION, AN ELECTRODE IN SAID CYLINDRICAL ELECTRODE, AND MEANS FOR APPLYING A RADIO-FREQUENCY VOLTAGE TO SAID ELECTRODE POSITIONED IN SAID CYLINDRICAL ELECTRODE.
Claim 2
Dependent Claim
71 words
IN A MASS SPECTROMETER, THE COMBINATION WHICH COMPRISES: A VACUUM-TIGHT ENVELOPE, A PERIODICALLY MODULATED ION SOURCE, AND MEANS FOR PRODUCING A TROUGHLIKE ELECTRIC POTENTIAL DISTRIBUTION IN THAT ENVELOPE AND INCORPORATING, A SUBSTANTIALLY CYLINDRICAL ELECTRODE, MEANS FOR POSITIVELY BIASING SAID CYLINDRICAL ELECTRODE WITH RESPECT TO THE MINIMUM OF SAID POTENTIAL DISTRIBUTION, AN ELECTRODE IN SAID CYLINDRICAL ELECTRODE, AND MEANS FOR APPLYING A RADIO-FREQUENCY VOLTAGE TO SAID ELECTRODE POSITIONED IN SAID CYLINDRICAL ELECTRODE.
References Cited (Backward Citations)
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Cited
US2688088A
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US2648009A
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US2782316A
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US2721271A
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US2866097A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |