US1944274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of treating chemical compounds
Assignee: EIDP Inc
•
Filing: 1932-05-25
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Granted: 1934-01-23
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Expires: 1952-05-25
Abstract
No abstract record available.
Inventors
- 👤 Paul L Salzberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:08
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/04; C07C; C07C29/00; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/11
Claims Analysis
Total Claims: 0
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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) | 1937-01-22 | 1937-07-24 | 1938-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1941-01-22 | 1941-07-24 | 1942-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1945-01-22 | 1945-07-24 | 1946-01-23 | $7700.00 | Window Closed / Lapsed |