Patent US2528542A successfully refreshed from Google Patents.
US2528542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenhydroxyarylaliphatic acids
Assignee: Merck Sharp & Dohme LLC
•
Filing: 1948-05-28
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Granted: 1950-11-07
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Expires: 1968-05-28
Abstract
No abstract record available.
Inventors
- 👤 Papa Domenick
- 👤 Schwenk Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:34
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/42; C07C59/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
COMPOUNDS OF THE GROUP CONSISTING OF ACIDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
11 words
COMPOUNDS OF THE GROUP CONSISTING OF ACIDS OF THE GENERAL FORMULA
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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |