US2073683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diphenyl derivatives
Assignee: ER Squibb and Sons LLC
•
Filing: 1933-10-04
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Granted: 1937-03-16
•
Expires: 1953-10-04
Abstract
No abstract record available.
Inventors
- 👤 Walter G Christiansen
- 👤 Sidney E Harris
- 👤 Lee John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:43
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/055; C07C37/001; C07C37/002; C07C37/11; C07C39/00; C07C39/12; C07C39/15; C07C45/00; C07C45/45; C07C45/46; C07C45/51; C07C45/54; C07C49/00; C07C49/76; C07C49/82; C07C49/83; C07C49/84
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) | 1940-03-15 | 1940-09-14 | 1941-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-15 | 1944-09-14 | 1945-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-15 | 1948-09-14 | 1949-03-16 | $7700.00 | Window Closed / Lapsed |