US3663725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibition
Assignee: General Electric Co
•
Filing: 1970-04-23
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Granted: 1972-05-16
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Expires: 1990-04-23
Abstract
Abstract A SMALL PROPORTION OF OXYGEN AND HYDROGEN, PREFERABLY ABOUT 100 TO 300 PARTS PER BILLION OF OXYGEN AND STOICHIOMETRIC AMOUNT OF HYDROGEN, IS INTRODUCED INTO THE BOILER FEEDWATER IN AN ELECTRICAL POWER GENERATING PLANT SO AS TO DECREASE THE CORROSION RATE OF MATERIALS SUCH AS CARBON STEEL IN THE FEEDWATER HEATER CHAIN. THIS TECHNIQUE IS ESPECIALLY USEFUL IN WATER COOLED OR MODERATED NUCLEAR POWER PLANTS SINCE A SUITABLE SUPPLY OF OXYGEN AND HYDROEN ARE GENERATED BY RADIOLYTIC DECOMPOSITION OF WATER IN THE REACTOR CORE AND BECAUSE CORROSION PRODUCTS IN THE WATER SUPPLY ARE ESPECIALLY HARMFUL IN SUCH A PLANT.
Inventors
- 👤 Wesley L Pearl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:30
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/18; F; F22; F22D; F22D11/00; F22D11/006
Claims Analysis
Total Claims: 0
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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) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |