US2449613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactions of inorganic polyisocyanates and polyisothiocyanates
Assignee: EIDP Inc
•
Filing: 1943-06-17
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Granted: 1948-09-21
•
Expires: 1963-06-17
Abstract
No abstract record available.
Inventors
- 👤 Miller Henry Charles
- 👤 Pratt Burt Carlton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:45
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/77
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1482076A
Cited
US1622368A
Cited
DE512160C
Cited
US2086419A
Cited
US2282827A
Cited
US2331276A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-21 | 1952-03-22 | 1952-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-21 | 1956-03-22 | 1956-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-21 | 1960-03-22 | 1960-09-21 | $7700.00 | Window Closed / Lapsed |