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US2510849A
Expired / Lapsed
US
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Method of stabilizing aromatic amines
Assignee: Standard Oil Development Co
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Filing: 1946-04-26
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Granted: 1950-06-06
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Expires: 1966-04-26
Abstract
No abstract record available.
Inventors
- 👤 John C Zimmer
- 👤 Arnold J Morway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:58
CPC Classifications
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Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A COMPOSITION COMPRISING A STABILIZED AROMATIC AMINE WHICH CONSISTS ESSENTIALLY OF AN AROMATIC AMINE HAVING ADDED THERETO ABOUT .05 TO 0.5% BY WEIGHT OF THE REACTION PRODUCT OF P2S5 WITH A POLYALKYL PHENOL, SAID REACTION PRODUCT CONTAINING BOTH PHOSPHORUS AND SULFUR.
Claim 2
Dependent Claim
41 words
A COMPOSITION COMPRISING A STABILIZED AROMATIC AMINE WHICH CONSISTS ESSENTIALLY OF AN AROMATIC AMINE HAVING ADDED THERETO ABOUT .05 TO 0.5% BY WEIGHT OF THE REACTION PRODUCT OF P2S5 WITH A POLYALKYL PHENOL, SAID REACTION PRODUCT CONTAINING BOTH PHOSPHORUS AND SULFUR.
References Cited (Backward Citations)
US1947578A
Cited
US1961097A
Cited
US1917073A
Cited
US2348290A
Cited
US2422484A
Cited
US2434650A
Cited
US2442457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |