Patent US2574150A successfully refreshed from Google Patents.
US2574150A
Expired / Lapsed
US
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Acenaphthenyl amino alcohols
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1949-05-24
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Granted: 1951-11-06
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Expires: 1969-05-24
Abstract
No abstract record available.
Inventors
- 👤 James F Kerwin
- 👤 Glenn E Ullyot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:03
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/04; C07C209/14; C07C209/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
ACENAPHTHENYL AMINO ALCOHYOLS HAVING THE STRUCTURE
Claim 2
Dependent Claim
6 words
ACENAPHTHENYL AMINO ALCOHYOLS HAVING THE STRUCTURE
References Cited (Backward Citations)
AT134626B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |