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US3753924A
Expired / Lapsed
US
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Rust inhibitor containing tannins with a chelation catalyst and a cross linking agent
Assignee: GECHEM
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Filing: 1970-09-16
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Granted: 1973-08-21
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Expires: 1990-09-16
Abstract
Abstract THE INVENTION PERTAINS TO A RUST INHIBITOR CONSISTING OF TANNIC ACID AND ADDITIVES SAID INHIBITOR COMPRISING AT LEAST A TANNIC ACID A CATALYST CAPABLE OF INITIATING THE CHELATION OF IRON ATOMS AND A CROSS-LINKING AGENT.
Inventors
- 👤 R Franiau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:42
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |