US3226299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for rendering subcritical a boiling water nuclear reactor
Assignee: United Kingdom Atomic Energy Authority
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Filing: 1962-12-10
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Granted: 1965-12-28
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Expires: 1982-12-10
Abstract
No abstract record available.
Inventors
- 👤 Hackney Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:34
CPC Classifications
G; G21; G21C; G21C9/00; G21C9/02; G21C1/00; G21C1/04; G21C1/06; G21C1/08; G21C1/14; G21C1/16; G21C1/18; G21C1/20; G21C17/00; G21C17/10; G21C5/00; G21C5/02; G21C5/06; G21C7/00; G21C7/06; G21C7/26; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF RENDERING SUBCRITICAL A BOILING WATER NUCLEAR REACTOR HAVING PRESSURIZED WATER INTERPOSED AS AN INTERMEDIATE HEAT TRANSFER MEDIUM BETWEEN FUEL ELEMENTS AND THE BOILING WATER REACTOR COOLANT SUBJECT TO A LESSER DEGREE OF PRESSURIZATION, SAID METHOD COMPRISING THE STEPS OF RELEASING REACTOR COOLANT PRESSURE TO A DEGREE RENDERING THE REACTOR SUBCRITICAL AND THEN ARRESTING THE PRESSURE RELEASE TO LEAVE A POOL OF REACTOR COOLANT OF A DEPTH SUCH
Claim 2
Independent Claim
70 words
A METHOD OF RENDERING SUBCRITICAL A BOILING WATER NUCLEAR REACTOR HAVING PRESSURIZED WATER INTERPOSED AS AN INTERMEDIATE HEAT TRANSFER MEDIUM BETWEEN FUEL ELEMENTS AND THE BOILING WATER REACTOR COOLANT SUBJECT TO A LESSER DEGREE OF PRESSURIZATION, SAID METHOD COMPRISING THE STEPS OF RELEASING REACTOR COOLANT PRESSURE TO A DEGREE RENDERING THE REACTOR SUBCRITICAL AND THEN ARRESTING THE PRESSURE RELEASE TO LEAVE A POOL OF REACTOR COOLANT OF A DEPTH SUCH
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-27 | 1969-06-28 | 1969-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-27 | 1973-06-28 | 1973-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-27 | 1977-06-28 | 1977-12-28 | $7700.00 | Window Closed / Lapsed |