US2334476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unsaturated isocyanate
Assignee: EIDP Inc
•
Filing: 1940-09-04
•
Granted: 1943-11-16
•
Expires: 1960-09-04
Abstract
No abstract record available.
Inventors
- 👤 Coffman Donald Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:34
CPC Classifications
C; C07; C07C; C07C265/00; C08; C08F; C08F26/00; C08F26/02
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) | 1946-11-15 | 1947-05-17 | 1947-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-11-15 | 1951-05-17 | 1951-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-11-15 | 1955-05-17 | 1955-11-16 | $7700.00 | Window Closed / Lapsed |