US2266514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of dithiophosphoric acids
Assignee: Wyeth Holdings LLC
•
Filing: 1938-09-09
•
Granted: 1941-12-16
•
Expires: 1958-09-09
Abstract
No abstract record available.
Inventors
- 👤 Charles J Romieux
- 👤 Kenneth D Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:12
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/17; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/014; C07F9/1651; C07F9/1652; C07F9/1653; C07F9/1654; C07F9/1656
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1944-12-15 | 1945-06-16 | 1945-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-12-15 | 1949-06-16 | 1949-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-12-15 | 1953-06-16 | 1953-12-16 | $7700.00 | Window Closed / Lapsed |