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US2668819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
S-(ethylxanthoyl) o-(4-nitrophenyl) methanethiolphosphonate
Assignee: Dow Chemical Co
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Filing: 1953-04-21
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Granted: 1954-02-09
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Expires: 1973-04-21
Abstract
No abstract record available.
Inventors
- 👤 Tolkmith Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:23
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/18; A01N57/22; C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4071; C07F9/409; C07F9/4093
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) | 1957-02-08 | 1957-08-10 | 1958-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-08 | 1961-08-10 | 1962-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-08 | 1965-08-10 | 1966-02-09 | $7700.00 | Window Closed / Lapsed |