Patent US4728294A successfully refreshed from Google Patents.
Patent US2948746A successfully refreshed from Google Patents.
US2948746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic esters of alpha-alkyl phenol acetic acids and derivatives thereof, and a process of making same
Assignee: Kali Chemie AG
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Filing: 1954-07-14
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Granted: 1960-08-09
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Expires: 1974-07-14
Abstract
No abstract record available.
Inventors
- 👤 Stuehmer Werner
- 👤 Funke Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:33
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
12 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ESTERS HAVING THE FORMULA
References Cited (Backward Citations)
US2655511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |