Patent US3360740A successfully refreshed from Google Patents.
US3360740A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Critical temperature range for oxygenated tungsten ionizing detector in thallium beam tubes
Assignee: HP Inc
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Filing: 1966-07-18
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Granted: 1967-12-26
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Expires: 1986-07-18
Abstract
No abstract record available.
Inventors
- 👤 Richard F Lacey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:29
CPC Classifications
H; H05; H05H; H05H3/00; G; G04; G04F; G04F5/00; G04F5/14; H01; H01J; H01J27/00; H01J27/02; H01J27/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
AN OXYGENATED TUNGSTEN THALLIUM IONIZER APPARATUS INCLUDING: MEANS DEFINING AN EVACUATED ENVELOPE; MEANS FOR PRODUCING A BEAM OF THALLIUM ATOMS WITHIN SAID ENVELOPE; MEANS DISPOSED IN THE BEAM PATH FOR IONIZING THALLIUM ATOMS OF THE BEAM INCIDENT THEREON; SAID IONIZING MEANS INCLUDING, A TUNGSTEN ELEMENT, MEANS FORMING A COATING OF OXYGEN ATOMS ON A SURFACE OF SAID IONIZER ELEMENT AGAINST WHICH THE THALLIUM ATOMS IMPINGE FOR IONIZATION, AND MEANS FOR HEATING THE IONIZING SURFACE OF SAID TUNGSTEN ELEMENT TO AND OPERATING SAME AT A TEMPERATURE WITHIN THE RANGE OF 1200* K. TO 1250*K., WHEREBY THE IONIZATION EFFICIENCY OF SAID IONIZING ELEMENT IS ON THE ORDER OF 80% AND WHEREBY THE MEAN STICKING TIME OF THE THALLIUM ATOMS IS ON THE ORDER OF 10-2 SECONDS THEREBY PERMITTING INTENSITY MODULATION OF THE INCIDENT BEAM TO BE EFFICIENCTLY CARRIED OVER AS INTENSITY MODULATION OF THE IONIZED BEAM AT FREQUENCIES ON THE ORDER OF 10 HZ.
Claim 2
Dependent Claim
152 words
AN OXYGENATED TUNGSTEN THALLIUM IONIZER APPARATUS INCLUDING: MEANS DEFINING AN EVACUATED ENVELOPE; MEANS FOR PRODUCING A BEAM OF THALLIUM ATOMS WITHIN SAID ENVELOPE; MEANS DISPOSED IN THE BEAM PATH FOR IONIZING THALLIUM ATOMS OF THE BEAM INCIDENT THEREON; SAID IONIZING MEANS INCLUDING, A TUNGSTEN ELEMENT, MEANS FORMING A COATING OF OXYGEN ATOMS ON A SURFACE OF SAID IONIZER ELEMENT AGAINST WHICH THE THALLIUM ATOMS IMPINGE FOR IONIZATION, AND MEANS FOR HEATING THE IONIZING SURFACE OF SAID TUNGSTEN ELEMENT TO AND OPERATING SAME AT A TEMPERATURE WITHIN THE RANGE OF 1200* K. TO 1250*K., WHEREBY THE IONIZATION EFFICIENCY OF SAID IONIZING ELEMENT IS ON THE ORDER OF 80% AND WHEREBY THE MEAN STICKING TIME OF THE THALLIUM ATOMS IS ON THE ORDER OF 10-2 SECONDS THEREBY PERMITTING INTENSITY MODULATION OF THE INCIDENT BEAM TO BE EFFICIENCTLY CARRIED OVER AS INTENSITY MODULATION OF THE IONIZED BEAM AT FREQUENCIES ON THE ORDER OF 10 HZ.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |