Patent EP0255568A2 successfully refreshed from Google Patents.
US2855422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
O-(3, 4-dichlorophenyl) o-methyl phosphoroamidothioates
Assignee: Dow Chemical Co
•
Filing: 1956-03-05
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Granted: 1958-10-07
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Expires: 1976-03-05
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Kauer
- 👤 Edgar C Britton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:31
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/22; C07F9/24; C07F9/2404; C07F9/242
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
AN O-(3,4-DICHLOROPHENYL) O-METHYL PHOSPOROAMIDOTHIOATE OF THE FORMULA
Claim 2
Dependent Claim
7 words
AN O-(3,4-DICHLOROPHENYL) O-METHYL PHOSPOROAMIDOTHIOATE OF THE FORMULA
References Cited (Backward Citations)
US2552574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |