US2877179A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for and method of inhibiting corrosion of metals
Assignee: Cities Service Research and Development Co
•
Filing: 1956-03-26
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Granted: 1959-03-10
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Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 William B Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:46
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
THE PROCESS OF PREVENTING THE CORROSION OF FERROUS METALS WHEN EXPOSED TO CONTACT WITH CORROSIVE FLUIDS WHICH CONTAIN VARYING AMOUNTS OF HYDROGEN SSULFIDE, CARBON DIOXIDE AND OTHER ACIDIC MATERIALS WHICH COMPRISES INCORPORATING INTO THE CORROSIVE FLUIDS A SMALL BUT SUFFICIENT QUALITY OF A COMPOUND HAVING THE FURMULA
Claim 2
Dependent Claim
47 words
THE PROCESS OF PREVENTING THE CORROSION OF FERROUS METALS WHEN EXPOSED TO CONTACT WITH CORROSIVE FLUIDS WHICH CONTAIN VARYING AMOUNTS OF HYDROGEN SSULFIDE, CARBON DIOXIDE AND OTHER ACIDIC MATERIALS WHICH COMPRISES INCORPORATING INTO THE CORROSIVE FLUIDS A SMALL BUT SUFFICIENT QUALITY OF A COMPOUND HAVING THE FURMULA
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) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |