US3630932A
Expired / Lapsed
US
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Corrosion-inhibited mineral acids
Assignee: Air Products and Chemicals Inc
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Filing: 1968-12-31
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Granted: 1971-12-28
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Expires: 1988-12-31
Abstract
Abstract AQUEOUS ACID SOLUTIONS ARE INHIBITED AGAINST CORROSION OF METALS, ESPECIALLY FERROUS METALS, BY INCORPORATION OF A CORROSION-INHIBITING SYSTEM COMPOSED OF A COMBINATION OF 4-ETHYL-1-OCTYN-3-OL AND 1,10-DIETHYL-7-TETRADECYN-6,9DIOL.
Inventors
- 👤 Robert J Tedeschi
- 👤 Paul W Natali
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:10
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/164; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06; C23G1/068; Y; Y10; Y10S; Y10S507/00; Y10S507/933; Y10S507/934
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) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |