US2072867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical processes and new products produced thereby
Assignee: EIDP Inc
•
Filing: 1931-12-26
•
Granted: 1937-03-09
•
Expires: 1951-12-26
Abstract
No abstract record available.
Inventors
- 👤 Wallace H Carothers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:49
CPC Classifications
C; C07; C07C; C07C50/00; C07C50/16; C07C50/20; C07C1/00; C07C1/32; C07C1/325; C07C1/326; C07C11/00; C07C11/12; C07C11/173; C07C11/18; C07C15/00; C07C15/40; C07C15/42; C07C15/44; C07C46/00; C07C46/02; C07C49/00; C07C49/587; C07C49/657; C07C49/683; C08; C08F; C08F36/00; C08F36/02; C08F36/04
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) | 1940-03-08 | 1940-09-07 | 1941-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-08 | 1944-09-07 | 1945-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-08 | 1948-09-07 | 1949-03-09 | $7700.00 | Window Closed / Lapsed |