US3183166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low temperature graphite radiation damage removal
Assignee: Individual
•
Filing: 1962-08-23
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Granted: 1965-05-11
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Expires: 1982-08-23
Abstract
No abstract record available.
Inventors
- 👤 Donald G Schweitzer
- 👤 Robert M Singer
- 👤 David H Gurinsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:12
CPC Classifications
G; G21; G21C; G21C5/00; G21C5/02; G21C5/08; G21C5/12; G21C5/126; Y; Y02; Y02E; Y02E30/00; Y02E30/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
THE METHOD OF ANNEALING GRAPHITE IN AN AIR COOLED NUCLEAR REACTOR IN WHICH IRRADIATION HAS PRODUCED STORED ENERGY AND POSITIVE LENGTH CHANGE IN THE GRAPHITE, COMPRISING HEATING SAID GRAPHITE N AIR TO 150*C. FOR PRODUCING NEGATIVE LENGTH CHANGE AND STORED ENERGY RELEASE IN SAID GRAPHITE, IRRADIATING SAID GRAPHITE FOR PRODUCING A POSITIVE LENGTH CHANGE OF ONLY .00030 INCH IN SAID GRAPHITE, AND HEATING SAID GRAPHITE IN AIR TO 150*C. FOR PROVIDING FURTHER STORED ENERGY RELEASE AND REMOVAL OF THE POSITIVE LENGTH CHANGE IN SAID GRAPHITE CAUSED BY THE PRECEEDING IRRADIATION, SAID GRAPHITE BEING MAINTAINED AT A MAXIMUM TEMPERATURE BELOW 250*C. WHEREBY SAID GRAPHITE IS PREVENTED FROM BEING GREATLY OXIDIZED AND THE RELEASE OF LARGE DESTRUCTIVE AMOUNTS OF STORED ENERGY IS PREVENTED.
Claim 2
Independent Claim
121 words
THE METHOD OF ANNEALING GRAPHITE IN AN AIR COOLED NUCLEAR REACTOR IN WHICH IRRADIATION HAS PRODUCED STORED ENERGY AND POSITIVE LENGTH CHANGE IN THE GRAPHITE, COMPRISING HEATING SAID GRAPHITE N AIR TO 150*C. FOR PRODUCING NEGATIVE LENGTH CHANGE AND STORED ENERGY RELEASE IN SAID GRAPHITE, IRRADIATING SAID GRAPHITE FOR PRODUCING A POSITIVE LENGTH CHANGE OF ONLY .00030 INCH IN SAID GRAPHITE, AND HEATING SAID GRAPHITE IN AIR TO 150*C. FOR PROVIDING FURTHER STORED ENERGY RELEASE AND REMOVAL OF THE POSITIVE LENGTH CHANGE IN SAID GRAPHITE CAUSED BY THE PRECEEDING IRRADIATION, SAID GRAPHITE BEING MAINTAINED AT A MAXIMUM TEMPERATURE BELOW 250*C. WHEREBY SAID GRAPHITE IS PREVENTED FROM BEING GREATLY OXIDIZED AND THE RELEASE OF LARGE DESTRUCTIVE AMOUNTS OF STORED ENERGY IS PREVENTED.
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) | 1968-05-10 | 1968-11-09 | 1969-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-10 | 1972-11-09 | 1973-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-10 | 1976-11-09 | 1977-05-11 | $7700.00 | Window Closed / Lapsed |