Patent US2715682A successfully refreshed from Google Patents.
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 13:49
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)
DE317096C
Cited
US1657986A
Cited
US1771704A
Cited
US1610863A
Cited
US1966242A
Cited
US2160605A
Cited
US2215426A
Cited
US2341551A
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 |