US2153331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of gunpowder by means of an acetone and alcohol solvent mixture
Assignee: NITROKEMIA IPARTELEPEK RESZVEN
•
Filing: 1936-11-10
•
Granted: 1939-04-04
•
Expires: 1956-11-10
Abstract
No abstract record available.
Inventors
- 👤 Kunz Alfons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:08
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/44; C07D207/444; C07D207/448; C07D207/452; C06; C06B; C06B21/00; C06B21/0008
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1942-04-03 | 1942-10-03 | 1943-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-04-03 | 1946-10-03 | 1947-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-04-03 | 1950-10-03 | 1951-04-04 | $7700.00 | Window Closed / Lapsed |