Patent US4643618A successfully refreshed from Google Patents.
Patent US3112401A successfully refreshed from Google Patents.
US3112401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shielding to confine magnetic field to ion source area of a neutron generator
Assignee: US Philips Corp
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Filing: 1958-09-12
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Granted: 1963-11-26
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Expires: 1978-09-12
Abstract
No abstract record available.
Inventors
- 👤 Adrianus Cornelis Van Dorsten
- 👤 Reifenschweiler Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:03
CPC Classifications
H; H05; H05H; H05H3/00; H05H3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A NEUTRON GENERATOR COMPRISING AN ENVELOPE, A GASEOUS FILLING WITHIN SAID ENVELOPE, MEANS WITHIN A PORTION OF SAID ENVELOPE FOR PRODUCING A GLOW-DISCHARGE COMPRISING A CATHODE HAVING A FIRST PLATE-SHAPED PORTION AND A SECOND PLATE-SHAPED PORTION PROVIDED WITH AN APERTURE AND ARRANGED PARALLEL TO SAID FIRST PORTION, A CYLINDRICAL ANODE CENTRALLY DISPOSED BETWEEN SAID CATHODE PORTIONS, AND MAGNETIC MEANS WITHIN SAID ENVELOPE FOR PRODUCING A MAGNETIC FIELD WHICH EXTENDS SUBSTANTIALLY PERPENDICULAR TO SAID CATHODE PORTIONS, A TARGET WITHIN A SECOND PORTION OF SAID ENVELOPE AND DISPOSED TO BE STRUCK BY IONS PRODUCED BY SAID GLOW-DISCHARGE, MEANS TO ACCELERATE THE IONS PRODUCED IN THE DISCHARGE TOWARD THE TARGET TO EFFECT A NUCLEAR REACTION, AND MAGNETIC SHIELDING MEANS SURROUNDING SAID GLOW-DISCHARGE PRODUCING MEANS AND SAID MAGNETIC FIELD PRODUCING MEANS EXCEPT FOR AN APERTURE FOR THE PASSAGE OF IONS PRODUCED BY THE GLOW-DISCHARGE.
Claim 2
Dependent Claim
140 words
A NEUTRON GENERATOR COMPRISING AN ENVELOPE, A GASEOUS FILLING WITHIN SAID ENVELOPE, MEANS WITHIN A PORTION OF SAID ENVELOPE FOR PRODUCING A GLOW-DISCHARGE COMPRISING A CATHODE HAVING A FIRST PLATE-SHAPED PORTION AND A SECOND PLATE-SHAPED PORTION PROVIDED WITH AN APERTURE AND ARRANGED PARALLEL TO SAID FIRST PORTION, A CYLINDRICAL ANODE CENTRALLY DISPOSED BETWEEN SAID CATHODE PORTIONS, AND MAGNETIC MEANS WITHIN SAID ENVELOPE FOR PRODUCING A MAGNETIC FIELD WHICH EXTENDS SUBSTANTIALLY PERPENDICULAR TO SAID CATHODE PORTIONS, A TARGET WITHIN A SECOND PORTION OF SAID ENVELOPE AND DISPOSED TO BE STRUCK BY IONS PRODUCED BY SAID GLOW-DISCHARGE, MEANS TO ACCELERATE THE IONS PRODUCED IN THE DISCHARGE TOWARD THE TARGET TO EFFECT A NUCLEAR REACTION, AND MAGNETIC SHIELDING MEANS SURROUNDING SAID GLOW-DISCHARGE PRODUCING MEANS AND SAID MAGNETIC FIELD PRODUCING MEANS EXCEPT FOR AN APERTURE FOR THE PASSAGE OF IONS PRODUCED BY THE GLOW-DISCHARGE.
References Cited (Backward Citations)
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Cited
US2240914A
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US2424788A
Cited
US2636990A
Cited
US2769096A
Cited
US2689918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-25 | 1967-05-27 | 1967-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-25 | 1971-05-27 | 1971-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-25 | 1975-05-27 | 1975-11-26 | $7700.00 | Window Closed / Lapsed |