US2974139A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thiophenylpyridyl amines
Assignee: Evonik Operations GmbH
•
Filing: 1955-09-30
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Granted: 1961-03-07
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Expires: 1975-09-30
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm A Schuler
- 👤 Klebe Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:54
CPC Classifications
C; C07; C07D; C07D513/00; C07D513/02; C07D513/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
A THIOPHENYLPYRIDYL AMINE COMPOUND OF THE GENERAL FORMULA
Claim 2
Dependent Claim
8 words
A THIOPHENYLPYRIDYL AMINE COMPOUND 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) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |