Patent US2852540A successfully refreshed from Google Patents.
US2852540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil soluble alkali and alkaline earth metal salts of p-acylamino phenols
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1954-08-09
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Granted: 1958-09-16
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Expires: 1974-08-09
Abstract
No abstract record available.
Inventors
- 👤 David W Young
- 👤 Delmer L Cottle
- 👤 Ober C Slotterbeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:05
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
AS A NEW COMPOSITION OF MATTER, THE METAL SALT OF A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
16 words
AS A NEW COMPOSITION OF MATTER, THE METAL SALT OF A COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
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US2459113A
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US2497099A
Cited
US2653157A
Cited
US2710299A
Cited
US2653158A
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US2625557A
Cited
US2680097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |