US2757066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion prevention
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1952-09-17
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Granted: 1956-07-31
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Expires: 1972-09-17
Abstract
No abstract record available.
Inventors
- 👤 Frank T Gardner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:35
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
PROCESS FOR MINIMIZING CORROSION IN THE PRESENCE OF MOISTURE AND OXYGEN IN THE VAPOR SPACE OF A METAL VESSEL CONTAINING SOUR PETROLEUM OIL EVOLVING HYDROGEN SULFIDE VAPOR WHICH COMPRISES MAINTAINING IN THE SAID VAPOR SPACE GASEOUS AMMONIA IN AMOUNTS EQUAL TO FROM ABOUT 3 PER CENT TO 20 PER CENT OF THE AMOUNT THEROTICALLY REQUIRED TO CONVERT SAID HYDROGEN SULFIDE VAPORS TO AMMONIUM SULFIDE.
Claim 2
Dependent Claim
64 words
PROCESS FOR MINIMIZING CORROSION IN THE PRESENCE OF MOISTURE AND OXYGEN IN THE VAPOR SPACE OF A METAL VESSEL CONTAINING SOUR PETROLEUM OIL EVOLVING HYDROGEN SULFIDE VAPOR WHICH COMPRISES MAINTAINING IN THE SAID VAPOR SPACE GASEOUS AMMONIA IN AMOUNTS EQUAL TO FROM ABOUT 3 PER CENT TO 20 PER CENT OF THE AMOUNT THEROTICALLY REQUIRED TO CONVERT SAID HYDROGEN SULFIDE VAPORS TO AMMONIUM SULFIDE.
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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |