US2596273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting hydrogen sulfide corrosion of metals
Assignee: Cities Service Oil Co
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Filing: 1949-05-10
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Granted: 1952-05-13
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Expires: 1969-05-10
Abstract
No abstract record available.
Inventors
- 👤 Melvin I Moyer
- 👤 Joseph M Hersh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 00:54
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/932; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE PROCESS OF INHIBITING CORROSION OF METAL OIL WELL EQUIPMENT WHICH COMPRISES INTRODUCING INTO AN OIL WELL BRINE CONTAINING DISSOLVED HYDROGEN SULFIDE, AT A POINT NEAR A PRODUCING HORIZON OF THE WELL, A SMALL PROPORTION OF THE REACTION PRODUCT OF ONE MOL OF EHTYLENE DIAMINE AND TWO MOLS OF FORMALDEHYDE, THE QUANTITY OF THE REACTION PRODUCT BEING SUFFICIENT TO SUBSTANTIALLY INHIBIT CORROSION OF THE METAL EQUIPMENT AND THEREAFTER CAUSING THE BRINE TO FLOW IN CONTACT WITH THE METAL SURFACES TO BE PROTECTED.
Claim 2
Dependent Claim
82 words
THE PROCESS OF INHIBITING CORROSION OF METAL OIL WELL EQUIPMENT WHICH COMPRISES INTRODUCING INTO AN OIL WELL BRINE CONTAINING DISSOLVED HYDROGEN SULFIDE, AT A POINT NEAR A PRODUCING HORIZON OF THE WELL, A SMALL PROPORTION OF THE REACTION PRODUCT OF ONE MOL OF EHTYLENE DIAMINE AND TWO MOLS OF FORMALDEHYDE, THE QUANTITY OF THE REACTION PRODUCT BEING SUFFICIENT TO SUBSTANTIALLY INHIBIT CORROSION OF THE METAL EQUIPMENT AND THEREAFTER CAUSING THE BRINE TO FLOW IN CONTACT WITH THE METAL SURFACES TO BE PROTECTED.
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) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |