Patent US2450862A successfully refreshed from Google Patents.
Patent US2079962A successfully refreshed from Google Patents.
US2079962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basic esters of polyarylacetic acids and process of making the same
Assignee: FIRM OF SOCIETY OF CHEMICAL INDUSTRY IN BASLE
•
Filing: 1935-07-06
•
Granted: 1937-05-11
•
Expires: 1955-07-06
Abstract
No abstract record available.
Inventors
- 👤 Miescher Karl
- 👤 Hoffmann Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:01
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07C; C07C213/00; C07C213/06
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) | 1940-05-10 | 1940-11-09 | 1941-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-05-10 | 1944-11-09 | 1945-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-05-10 | 1948-11-09 | 1949-05-11 | $7700.00 | Window Closed / Lapsed |