US3400511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for retaining radioactive exhaust gas
Assignee: Hitachi Ltd
•
Filing: 1966-08-03
•
Granted: 1968-09-10
•
Expires: 1986-08-03
Abstract
No abstract record available.
Inventors
- 👤 Hajime Yamanouchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:31
CPC Classifications
G; G21; G21F; G21F9/00; G21F9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A PROCESS FOR TREATING AN EXHAUST GAS CONTAINING RADIOACTIVE GASES WHICH COMPRISES SELECTIVELY DIRECTING AN EXHAUST GAS LOW IN RADIOACTIVITY DIRECTLY TO THE ATMOSPHERE AND AN EXHAUST GAS HIGH IN RADIOACTIVITY TO THE FIRST OF A SERIES OF ABSORPTION RESERVOIRS SUBSTANTIALLY REMOVING THE RADIOACTIVE GASES FROM THE EXHAUST GAS IN SAID FIRST ABSORPTION RESERVOIR, DISCHARGING SAID TREATED EXHAUST GAS TO THE ATMOSPHERE, MONITORING SAID DISCHARGED GAS SUCH THAT WHEN THE RADIOACTIVITY OF SAID GAS REACHES A PREDETERMINED LEVEL THE FIRST ABSORPTION RESERVOIR IS BYPASSED AND THE EXHAUST GAS CONTAINING RADIOACTIVE GASES IS DIRECTED TO A SECOND RESERVOIR AND SUCCEEDING RESERVOIRS AS THE ADSORBING CAPACITY OF EACH RESERVOIR IS IN TURN SPENT.
Claim 2
Dependent Claim
111 words
A PROCESS FOR TREATING AN EXHAUST GAS CONTAINING RADIOACTIVE GASES WHICH COMPRISES SELECTIVELY DIRECTING AN EXHAUST GAS LOW IN RADIOACTIVITY DIRECTLY TO THE ATMOSPHERE AND AN EXHAUST GAS HIGH IN RADIOACTIVITY TO THE FIRST OF A SERIES OF ABSORPTION RESERVOIRS SUBSTANTIALLY REMOVING THE RADIOACTIVE GASES FROM THE EXHAUST GAS IN SAID FIRST ABSORPTION RESERVOIR, DISCHARGING SAID TREATED EXHAUST GAS TO THE ATMOSPHERE, MONITORING SAID DISCHARGED GAS SUCH THAT WHEN THE RADIOACTIVITY OF SAID GAS REACHES A PREDETERMINED LEVEL THE FIRST ABSORPTION RESERVOIR IS BYPASSED AND THE EXHAUST GAS CONTAINING RADIOACTIVE GASES IS DIRECTED TO A SECOND RESERVOIR AND SUCCEEDING RESERVOIRS AS THE ADSORBING CAPACITY OF EACH RESERVOIR IS IN TURN SPENT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |