US3107221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitor composition
Assignee: Dow Chemical Co
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Filing: 1958-04-18
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Granted: 1963-10-15
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Expires: 1978-04-18
Abstract
No abstract record available.
Inventors
- 👤 Hugh T Harrison
- 👤 Billy D Oakes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:39
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/04; Y; Y10; Y10S; Y10S507/00; Y10S507/933; Y10S507/934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METAL CORROSION INHIBITOR FOR USE WITH AQUEOUS ACIDS WHICH COMPRISES AN AMINE SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, LOWER ALKYL PYRIDINES, ALKYLAMINES HAVING FROM 4 TO 10 CARBON ATOMS, INCLUSIVE, IN EACH ALKYL SUBSTITUENT, AND HYDROXY LOER ALKYLAMINES, AND AN ACETYLENIC ALCOHOL HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
53 words
A METAL CORROSION INHIBITOR FOR USE WITH AQUEOUS ACIDS WHICH COMPRISES AN AMINE SELECTED FROM THE GROUP CONSISTING OF PYRIDINE, LOWER ALKYL PYRIDINES, ALKYLAMINES HAVING FROM 4 TO 10 CARBON ATOMS, INCLUSIVE, IN EACH ALKYL SUBSTITUENT, AND HYDROXY LOER ALKYLAMINES, AND AN ACETYLENIC ALCOHOL HAVING A FORMULA SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
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US2814593A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-14 | 1967-04-15 | 1967-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-14 | 1971-04-15 | 1971-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-14 | 1975-04-15 | 1975-10-15 | $7700.00 | Window Closed / Lapsed |