Patent US1998489A successfully refreshed from Google Patents.
US1998489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Benzyl esters of halogenated orthobenzoyl-benzoic acids and process for preparing the same
Assignee: EIDP Inc
•
Filing: 1931-05-27
•
Granted: 1935-04-23
•
Expires: 1951-05-27
Abstract
No abstract record available.
Inventors
- 👤 Frank A Canon
- 👤 Zimmerli Adolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:22
CPC Classifications
C; C07; C07C; C07C65/00; C07C65/32; C07C65/34
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) | 1938-04-22 | 1938-10-22 | 1939-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-04-22 | 1942-10-22 | 1943-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-04-22 | 1946-10-22 | 1947-04-23 | $7700.00 | Window Closed / Lapsed |