Patent US6627260B2 successfully refreshed from Google Patents.
Patent US3787746A successfully refreshed from Google Patents.
US3787746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quenching gas for detectors of charged particles
Assignee: United States Atomic Energy Commission
•
Filing: 1973-05-11
•
Granted: 1974-01-22
•
Expires: 1993-05-11
Abstract
Abstract Operation of detectors of charged particles such as wire counters and Geiger-Muller tubes is improved by filling the counters with a quenching-gas mixture of argon, isobutane and methylchloroform.
Inventors
- 👤 M Atac
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:12
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
11 words
The detector of claim 1 wherein, said trichloroethane is methylchloroform (1,1,1-trichloroethane).
Claim 2
Dependent Claim
25 words
The detector of claim 2 wherein, said gas mixture is from 50% to 85% argon, from 50% to 15% isobutane and up to 0.65% methylchloroform.
Claim 3
Dependent Claim
15 words
The detector of claim 3 wherein, said gas mixture contains from 0.25% to 0.65% methylchloroform.
Claim 4
Dependent Claim
13 words
The detector of claim 4 wherein, said gas mixture contains substantially 0.37% methylchloroform.
Claim 5
Dependent Claim
23 words
The detector of claim 2 wherein, said gas is 80% argon and 20% isobutane to which has been added 0.25% to 0.65% methylchloroform.
Claim 6
Dependent Claim
12 words
The detector of claim 6 wherein, said gas contains substantially 0.37% methylchloroform.
References Cited (Backward Citations)
US3601612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |