US2799659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibition
Assignee: GAF Chemicals Corp
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Filing: 1953-04-27
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Granted: 1957-07-16
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Expires: 1973-04-27
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Mayhew
- 👤 Chapin E Stevens
- 👤 William J Maxcy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:07
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
116 words
A CORROSION INHIBITING COMPOSITION FOR ADDITION TO AQUEOUS SOLUTIONS NORMALLY CORROSIVE TO METAL SURFACES COMPRISING (A) FROM ABOUT 3 TO 35 PARTS BY WEIGHT OF A PRIMARY ROSIN AMINE, (B) FROM ABOUT 28 TO 75 PARTS BY WEIGHT OF A CONDENSATION PRODUCT OF AT LEAST ONE MOLE OF AN ALKYLENE OXIDE OF 2 TO 3 CARBON ATOMS FOR EACH MOLE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY ROSIN AMINES AND (C) FROM ABOUT 10 TO 50 PARTS BY WEIGHT OF A POLYALKOXYLATED WATER-SOLUBLE DERIVATIVE OF A COMPOUND CONTAINING AT LEAST TEN CARBON ATOMS AND AN ACTIVE HYDROGEN CONTAINING GROUP SELECTED FROM THE CLASS CONSISTING OF HYDROXY, CARBOXY, AMIDO AND MERCAPTO GROUPS.
Claim 2
Dependent Claim
116 words
A CORROSION INHIBITING COMPOSITION FOR ADDITION TO AQUEOUS SOLUTIONS NORMALLY CORROSIVE TO METAL SURFACES COMPRISING (A) FROM ABOUT 3 TO 35 PARTS BY WEIGHT OF A PRIMARY ROSIN AMINE, (B) FROM ABOUT 28 TO 75 PARTS BY WEIGHT OF A CONDENSATION PRODUCT OF AT LEAST ONE MOLE OF AN ALKYLENE OXIDE OF 2 TO 3 CARBON ATOMS FOR EACH MOLE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY ROSIN AMINES AND (C) FROM ABOUT 10 TO 50 PARTS BY WEIGHT OF A POLYALKOXYLATED WATER-SOLUBLE DERIVATIVE OF A COMPOUND CONTAINING AT LEAST TEN CARBON ATOMS AND AN ACTIVE HYDROGEN CONTAINING GROUP SELECTED FROM THE CLASS CONSISTING OF HYDROXY, CARBOXY, AMIDO AND MERCAPTO GROUPS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-15 | 1961-01-14 | 1961-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-15 | 1965-01-14 | 1965-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-15 | 1969-01-14 | 1969-07-16 | $7700.00 | Window Closed / Lapsed |