US2670352A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trichloroacetylpyridines
Assignee: Nepera Chemical Co Inc
•
Filing: 1951-07-12
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Granted: 1954-02-23
•
Expires: 1971-07-12
Abstract
No abstract record available.
Inventors
- 👤 Theodore I Fand
- 👤 Charles F Lutomski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:18
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/44; C07D213/46; C07D213/50
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
6 words
THE COMPOUNDS 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) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |