US2715682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion source for calutrons
Assignee: Individual
•
Filing: 1945-02-03
•
Granted: 1955-08-16
•
Expires: 1965-02-03
Abstract
No abstract record available.
Inventors
- 👤 Ernest O Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:27
CPC Classifications
H; H01; H01J; H01J49/00; H01J49/02; H01J49/10; H01J49/12; H01J49/126
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
IN A CALUTRON, AN ION SOURCE COMPRISING WALL STRUCTURE DEFINING AN ARC CHAMBER, AN ELECTRON EMISSIVE CATHODE OPERATIVELY ASSOCIATED WITH SAID ARC CHAMBER AND ADAPTED TO DISCHARGE ELECTRONS THEREINTO, A SOURCE OF CURRENT CONNECTED TO THREE SPACED-APART POINTS ALONG SAID CATHODE, AND MEANS FOR PROPORTIONING THE POTENTIALS APPLIED FROM SAID SOURCE BETWEEN SAID SPACED-APART CATHODE POINTS IN ORDER TO CONTROL THE ELECTRON EMISSION
Claim 2
Dependent Claim
63 words
IN A CALUTRON, AN ION SOURCE COMPRISING WALL STRUCTURE DEFINING AN ARC CHAMBER, AN ELECTRON EMISSIVE CATHODE OPERATIVELY ASSOCIATED WITH SAID ARC CHAMBER AND ADAPTED TO DISCHARGE ELECTRONS THEREINTO, A SOURCE OF CURRENT CONNECTED TO THREE SPACED-APART POINTS ALONG SAID CATHODE, AND MEANS FOR PROPORTIONING THE POTENTIALS APPLIED FROM SAID SOURCE BETWEEN SAID SPACED-APART CATHODE POINTS IN ORDER TO CONTROL THE ELECTRON EMISSION
References Cited (Backward Citations)
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Cited
US1657986A
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US1771704A
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US1610863A
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US1966242A
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US2160605A
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US2215426A
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Cited
US2373151A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-15 | 1959-02-14 | 1959-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-15 | 1963-02-14 | 1963-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-15 | 1967-02-14 | 1967-08-16 | $7700.00 | Window Closed / Lapsed |