Patent US3755512A successfully refreshed from Google Patents.
US3755512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-dialkoxyphosphorylthio-acrylamides and related compounds
Assignee: Rohm and Haas Co
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Filing: 1971-07-12
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Granted: 1973-08-28
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Expires: 1991-07-12
Abstract
Abstract A NOVEL METHOD FOR PREPARING 3-DIALKOXYPHOSPHORYLTHIO AND 3 - DIALKOXYTHIONOPHOSPHORYLTHIO-ACRYLAMIDES, CROTONAMIDES, METHACRYLAMIDES AND RELATED COMPOUNDS WHICH CONSISTS OF OPENING A 3-ISOTHIAZOLONE RING WITH A DIALKYL PHOSPHITE OR AN O,O-DIALKYL THIONOPHOSPHITE IN THE PRESENCE OF A BASIC CATALYST.
Inventors
- 👤 H Bayer
- 👤 W Hurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:20
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/10; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/173
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |