US3790496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkylene polyamine polymeric reaction product corrosion inhibitor
Assignee: Universal Oil Products Co
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Filing: 1971-09-30
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Granted: 1974-02-05
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Expires: 1991-09-30
Abstract
Abstract A CORROSION INHIBITING COMPOSITION OF (1) A HYDROCARBON SUBSTITUTED ALKYLENE POLYAMINE AND (2) POLYMERIC REACTION PRODUCT OF AN EPIHALOHYDRIN COMPOUND AND AN ALIPHATIC AMINE. THE COMPOSITION IS INCORPARATED IN ANY SUBSTRATE WHICH CONTACTS METAL AND THEREBY SERVES TO INHIBIT CORROSION OF THE METAL.
Inventors
- 👤 R Hausler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:55
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |