US2786033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibiting composition
Assignee: Gulf Oil Corp
•
Filing: 1953-11-30
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Granted: 1957-03-19
•
Expires: 1973-11-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph I Gottshall
- 👤 John G Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:35
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A COMPOSITION OF MATTER USEFUL AS A CORROSION INHIBITOR IN AQUEOUS SYSTEMS CONSISTING ESSENTIALLY OF AN ALKALI METAL SALT OF DISOAMYL ORTHOPHOSOHORIC ACID AND A COMPOUND SELECTED FROM THE CLASS CONSISTING OF ETHYLENEDIAMINETETEAACETIC ACID AND THE ALKALI METAL SALTS THEREOF IN A WEIGHT RATIO IN THE RANGE OF ABOUT 4:1 TO ABOUT 24:1.
Claim 2
Dependent Claim
53 words
A COMPOSITION OF MATTER USEFUL AS A CORROSION INHIBITOR IN AQUEOUS SYSTEMS CONSISTING ESSENTIALLY OF AN ALKALI METAL SALT OF DISOAMYL ORTHOPHOSOHORIC ACID AND A COMPOUND SELECTED FROM THE CLASS CONSISTING OF ETHYLENEDIAMINETETEAACETIC ACID AND THE ALKALI METAL SALTS THEREOF IN A WEIGHT RATIO IN THE RANGE OF ABOUT 4:1 TO ABOUT 24:1.
References Cited (Backward Citations)
US2273781A
Cited
US2491222A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-03-18 | 1960-09-17 | 1961-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-03-18 | 1964-09-17 | 1965-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-03-18 | 1968-09-17 | 1969-03-19 | $7700.00 | Window Closed / Lapsed |