US3098700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling corrosion of ferrous metal due to pitting by addition of mineral acid
Assignee: Pure Oil Co
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Filing: 1961-10-12
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Granted: 1963-07-23
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Expires: 1981-10-12
Abstract
No abstract record available.
Inventors
- 👤 George G Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:31
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; Y; Y10; Y10S; Y10S507/00; Y10S507/92; Y10S507/927; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
THE METHOD OF MITIGATING PITTING CORROSION OF FERROUS METAL STRUCTURES CONTACTED BY AQUEOUS SOLUTIONS CONTAINING FERROUS IONS, SULFATE IONS, AND SULFATE-REDUCING BACTERIAL COMPRISING ADDING TO SAID SOLUTIONS MINERAL ACID IN ABOUT THE MINIMUM AMOUNT SUFFICIENT TO PREVENT PRECIPITATION OF FERROUS SULFIDE.
Claim 2
Independent Claim
41 words
THE METHOD OF MITIGATING PITTING CORROSION OF FERROUS METAL STRUCTURES CONTACTED BY AQUEOUS SOLUTIONS CONTAINING FERROUS IONS, SULFATE IONS, AND SULFATE-REDUCING BACTERIAL COMPRISING ADDING TO SAID SOLUTIONS MINERAL ACID IN ABOUT THE MINIMUM AMOUNT SUFFICIENT TO PREVENT PRECIPITATION OF FERROUS SULFIDE.
References Cited (Backward Citations)
US2965577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-22 | 1967-01-21 | 1967-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-22 | 1971-01-21 | 1971-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-22 | 1975-01-21 | 1975-07-23 | $7700.00 | Window Closed / Lapsed |