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Patent US3217161A successfully refreshed from Google Patents.
US3217161A
Expired / Lapsed
US
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Electrode means to electrostatically focus ions separated by a mass spectrometer on a detector
Assignee: Associated Electrical Industries Ltd
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Filing: 1962-12-10
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Granted: 1965-11-09
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Craig Robert Derek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:53
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/02; H01J49/10; H01J49/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
FOR A MASS SPECTROMETER INCLUDING A MAGNETIC ANALYSER IN WHICH IONS FROM A SAMPLE BEING ANALYSED ARE PASSED THROUGH A MAGNETIC FIELD BETWEEN ELONGATED POLE PIECES AND ARE DEFLECTED IN A PLANE EXTENDING PERPENDICULAR TO SAID MAGNETIC FIELD, ION COLLECTING APPARATUS COMPRISING A LAYER OF MATERIAL SENSITIVE TO IONS, AND AN ION FOCUSSING SYSTEM EXTENDING OVER THE SURFACE OF SAID SENSITIVE LAYER IN A DIRECTION ALONG THE LENGTH OF SAID POLE PIECES, SYSTEM PROVIDING AN ION FOCUSSING FIELD TO FOCUS IONS IN THE DIRECTION OF THE MAGNETIC FIELD BETWEEN THE POLE PIECES IONS TRAVELLING TOWARDS SAID SENSITIVE LAYER FROM SAID MAGNETIC ANALYSER.
Claim 2
Dependent Claim
102 words
FOR A MASS SPECTROMETER INCLUDING A MAGNETIC ANALYSER IN WHICH IONS FROM A SAMPLE BEING ANALYSED ARE PASSED THROUGH A MAGNETIC FIELD BETWEEN ELONGATED POLE PIECES AND ARE DEFLECTED IN A PLANE EXTENDING PERPENDICULAR TO SAID MAGNETIC FIELD, ION COLLECTING APPARATUS COMPRISING A LAYER OF MATERIAL SENSITIVE TO IONS, AND AN ION FOCUSSING SYSTEM EXTENDING OVER THE SURFACE OF SAID SENSITIVE LAYER IN A DIRECTION ALONG THE LENGTH OF SAID POLE PIECES, SYSTEM PROVIDING AN ION FOCUSSING FIELD TO FOCUS IONS IN THE DIRECTION OF THE MAGNETIC FIELD BETWEEN THE POLE PIECES IONS TRAVELLING TOWARDS SAID SENSITIVE LAYER FROM SAID MAGNETIC ANALYSER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |