US3247373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mass spectrometer leak detector with means for controlling the ion source output
Assignee: GCA Corp
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Filing: 1962-12-18
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Granted: 1966-04-19
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Expires: 1982-12-18
Abstract
No abstract record available.
Inventors
- 👤 Richard F Herzog
- 👤 Sauermann Gerhard
- 👤 William J Mcmahon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:47
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/02; H01J49/022; G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/202
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A MASS SPECTROMETER COMPRISING A SOURCE OF GAS MOLECULES, A PAIR OF ELECTRODES FOR GENERATING AN ELECTRON BEAM TO IMPINGE UPON SAID GAS MOLECULES, A THIRD ELECTRODE FOR CONTROLLING THE INTENSITY OF SAID ELECTRON BEAM, AN ION DETECTOR, AND MEANS FOR MAINTAINING THE OUTPUT OF SAID ION COLLECTOR SUBSTANTIALLY CONSTANT INCLUDING FEEDBACK MEANS COUPLING SAID ION DETECTOR TO SAID THIRD ELECTRODE WHEREBY A CHANGE IN THE OUTPUT CURRENT FROM SAID ION DETECTOR PRODUCES A CHANGE IN THE POTENTIAL OF SAID THIRD ELECTRODE AND A CORRESPONDING OPPOSITE CHANGE IN THE INTENSITY OF THE ELECTRON BEAM.
Claim 2
Dependent Claim
94 words
A MASS SPECTROMETER COMPRISING A SOURCE OF GAS MOLECULES, A PAIR OF ELECTRODES FOR GENERATING AN ELECTRON BEAM TO IMPINGE UPON SAID GAS MOLECULES, A THIRD ELECTRODE FOR CONTROLLING THE INTENSITY OF SAID ELECTRON BEAM, AN ION DETECTOR, AND MEANS FOR MAINTAINING THE OUTPUT OF SAID ION COLLECTOR SUBSTANTIALLY CONSTANT INCLUDING FEEDBACK MEANS COUPLING SAID ION DETECTOR TO SAID THIRD ELECTRODE WHEREBY A CHANGE IN THE OUTPUT CURRENT FROM SAID ION DETECTOR PRODUCES A CHANGE IN THE POTENTIAL OF SAID THIRD ELECTRODE AND A CORRESPONDING OPPOSITE CHANGE IN THE INTENSITY OF THE ELECTRON BEAM.
References Cited (Backward Citations)
US2651723A
Cited
US2890338A
Cited
US2743370A
Cited
US2890336A
Cited
US2829259A
Cited
US2994776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |