US2201762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulphamic acid salts of polymeric amino compounds
Assignee: EIDP Inc
•
Filing: 1938-05-27
•
Granted: 1940-05-21
•
Expires: 1958-05-27
Abstract
No abstract record available.
Inventors
- 👤 Cupery Martin Eli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:48
CPC Classifications
C; C08; C08G; C08G85/00; C08G85/004; C08B; C08B37/00; C08B37/0006; C08B37/0024; C08B37/0027; C08B37/003; C08F; C08F8/00; C08F8/34
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) | 1943-05-21 | 1943-11-20 | 1944-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-21 | 1947-11-20 | 1948-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-21 | 1951-11-20 | 1952-05-21 | $7700.00 | Window Closed / Lapsed |