US2061617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stllphonic acid derivatives of aii
Assignee: —
•
Filing: —
•
Granted: 1936-11-24
•
Expires: 1953-11-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:44
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/02; C07C309/03; C07C309/07; C07C309/08; C07C303/00; C07C303/02; C07C303/04; C07C303/10; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/03
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) | 1939-11-24 | 1940-05-25 | 1940-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-11-24 | 1944-05-25 | 1944-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-11-24 | 1948-05-25 | 1948-11-24 | $7700.00 | Window Closed / Lapsed |