Patent US5662478A successfully refreshed from Google Patents.
Patent US2390037A successfully refreshed from Google Patents.
US2390037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transdithiocyanoethylene as a
Assignee: —
•
Filing: —
•
Granted: 1945-11-27
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Expires: 1962-11-27
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:30
CPC Classifications
A; A01; A01N; A01N47/00; A01N47/40; A01N47/48; C; C07; C07C; C07C331/00; C07C331/02; C07C331/04
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) | 1948-11-26 | 1949-05-28 | 1949-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-11-26 | 1953-05-28 | 1953-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-11-26 | 1957-05-28 | 1957-11-27 | $7700.00 | Window Closed / Lapsed |