Patent US2566376A successfully refreshed from Google Patents.
US2566376A
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US
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Beta-tertiary aminoethanol ethers of diaryl pyridyl carbinols
Assignee: WM S MERRELL CO
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Filing: 1949-11-23
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Granted: 1951-09-04
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Expires: 1969-11-23
Abstract
No abstract record available.
Inventors
- 👤 Robert S Shelton
- 👤 Charles H Tilford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:38
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
THE COMPOUNDS OF THE GENERIC FORMULA
Claim 2
Dependent Claim
6 words
THE COMPOUNDS OF THE GENERIC FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |