US3239470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizing filming amines
Assignee: WR Grace and Co
•
Filing: 1963-02-01
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Granted: 1966-03-08
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Expires: 1983-02-01
Abstract
No abstract record available.
Inventors
- 👤 Albert H Michal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:14
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A CORROSION INHIBITING COMPOSITION CHARACTERIZED BY STABILITY IN COLD WATER SOLUTIONS CONSISTING ESSENTIALLY OF, IN ADMIXTURE, A PRIMARY ALIPHATIC AMINE CONTAINING FROM 14 TO 22 CARBON ATOMS PER MOLECULE , A DISPERSING AGENT CONSISTING OF AN ETHHOXYLATED AMINE CONDENSATE CONTAINING AT LEAST 5 MOLECULAR PROPORTIONS OF ETHYLENE OXIDE FOR EVERY MOLECULAR JPROPORTION OF AN ALIPHATIC AMINE CONTAINING FROM 14 TO 22 CARBON ATOMS PER MOLECULE, AND A PHENOLIC LIGNIN SULFONATE HAVING A MOLECULAR WEIGHT OF 2,000 TO 15,000, AND CONTAINING FROM 2 TO 5 MONOMERIIC UNITS PER ATOM OF SULFUR, THE WEIGHT RATIO OF AMINE TO DISPERSING AGENT BEING FROM 1 TO 1 TO 50 TO 1, AND THE WEIGHT RATIO OF AMINE PLUS DISPERSING AGENT TO PHENOLIC LIGNIN SULFONATE BEING FROM 1 TO 1 TO 20 TO 1.
Claim 2
Dependent Claim
129 words
A CORROSION INHIBITING COMPOSITION CHARACTERIZED BY STABILITY IN COLD WATER SOLUTIONS CONSISTING ESSENTIALLY OF, IN ADMIXTURE, A PRIMARY ALIPHATIC AMINE CONTAINING FROM 14 TO 22 CARBON ATOMS PER MOLECULE , A DISPERSING AGENT CONSISTING OF AN ETHHOXYLATED AMINE CONDENSATE CONTAINING AT LEAST 5 MOLECULAR PROPORTIONS OF ETHYLENE OXIDE FOR EVERY MOLECULAR JPROPORTION OF AN ALIPHATIC AMINE CONTAINING FROM 14 TO 22 CARBON ATOMS PER MOLECULE, AND A PHENOLIC LIGNIN SULFONATE HAVING A MOLECULAR WEIGHT OF 2,000 TO 15,000, AND CONTAINING FROM 2 TO 5 MONOMERIIC UNITS PER ATOM OF SULFUR, THE WEIGHT RATIO OF AMINE TO DISPERSING AGENT BEING FROM 1 TO 1 TO 50 TO 1, AND THE WEIGHT RATIO OF AMINE PLUS DISPERSING AGENT TO PHENOLIC LIGNIN SULFONATE BEING FROM 1 TO 1 TO 20 TO 1.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |