US1967862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic compound and process for preparing same
Assignee: EIDP Inc
•
Filing: 1931-11-02
•
Granted: 1934-07-24
•
Expires: 1951-11-02
Abstract
No abstract record available.
Inventors
- 👤 Wallace H Carothers
- 👤 Arnold M Collins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:29
CPC Classifications
C; C07; C07C; C07C46/00; C07B; C07B37/00; C07B37/10; C07B37/12; C07C37/00; C07C37/06; C07C37/07; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/69; C07C51/00; C07C51/347; C07C51/353; C07C67/00; C07C67/30; C07C67/333; C07C67/343; C07C67/347; C07C2601/00; C07C2601/12; C07C2601/16; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/26; C07C2602/28; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24; C07C2603/40; C07C2603/42
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) | 1937-07-23 | 1938-01-22 | 1938-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-07-23 | 1942-01-22 | 1942-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-07-23 | 1946-01-22 | 1946-07-24 | $7700.00 | Window Closed / Lapsed |