US2993887A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anhydro amides
Assignee: Atlas Powder Co
•
Filing: 1953-01-06
•
Granted: 1961-07-25
•
Expires: 1973-01-06
Abstract
No abstract record available.
Inventors
- 👤 John D Zech
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:18
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; C; C10; C10M; C10M3/00; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
HETEROCYCLIC AMIDES OF THE FORMULA
Claim 2
Dependent Claim
5 words
HETEROCYCLIC AMIDES OF THE 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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |