Patent US3743728A successfully refreshed from Google Patents.
US3743728A
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US
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Insecticidal active composition and process for manufacturing the same
Assignee: Zeneca Inc
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Filing: 1970-11-05
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Granted: 1973-07-03
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Expires: 1990-11-05
Abstract
Abstract A PROCESS OF MANUFACTURING A LIQUID PESTICIDAL ACTIVE COMPOUND IS DESCRIBED HEREIN. THE PROCESS INVOLVES THE REACTION OF A MIXTURE OF LOWER ALIPHATIC ALCOHOLS WITH PHOSPHORUS PENTASULFIDE TO FORM A MIXTURE OF DITHIOPHOSPHORIC ACIDS. THESE ACIDS OR THEIR SALTS ARE THEN REACTED WITH N-CHLOROMETHYL PHTHALIMIDE TO PRODUCE A LIQUID MIXTURE OF PRODUCTS HAVING PESTICIDALLY ACTIVE PROPERTIES.
Inventors
- 👤 L Fancher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
A; A01; A01N; A01N57/00; A01N57/10; A01N57/16; C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/5537
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) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |