Patent US1024896A successfully refreshed from Google Patents.
Patent US2840539A successfully refreshed from Google Patents.
US2840539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable aqueous emulsion of alkyldiphenylamines
Assignee: Monsanto Chemicals Ltd
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Filing: 1955-06-27
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Granted: 1958-06-24
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Expires: 1975-06-27
Abstract
No abstract record available.
Inventors
- 👤 James W L Fordham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF PREPARING A STABLE AQUEOUS EMULSION OF MONOHEPTYL DIPHENYLAMINE WHICH COMPRISES ADDING 100 PARTS OF MONOHEPTYLDIPHENYLAMINE WHICH STIRRING TO AN AQUEOUS SOLUTION CONTAINING 0.5 TO 5.0 PARTS OF A POTASSIUM SALT OF A FATTY HAVING 10-18 CARBON ATOMS IN ITS STRUCTURE.
Claim 2
Independent Claim
43 words
THE METHOD OF PREPARING A STABLE AQUEOUS EMULSION OF MONOHEPTYL DIPHENYLAMINE WHICH COMPRISES ADDING 100 PARTS OF MONOHEPTYLDIPHENYLAMINE WHICH STIRRING TO AN AQUEOUS SOLUTION CONTAINING 0.5 TO 5.0 PARTS OF A POTASSIUM SALT OF A FATTY HAVING 10-18 CARBON ATOMS IN ITS STRUCTURE.
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) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |