Patent US3830822A successfully refreshed from Google Patents.
US3830822A
Expired / Lapsed
US
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Bis-pyridyl amines
Assignee: Imperial Chemical Industries Ltd
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Filing: 1971-07-19
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Granted: 1974-08-20
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Expires: 1991-07-19
Abstract
Abstract THIS INVENTION RELATES TO NEW BIS-PYRIDYL ANIE DERIVATIVES. THESE COMPOUNDS EXHIBIT FUBGICIDAL, INSECTICIDAL, HERBICIDAL AND ALGICIDAL PROPERTIES.
Inventors
- 👤 C Barlow
- 👤 C Tomlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:58
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/73; A; A01; A01N; A01N43/00; A01N43/34; A01N43/40; C07D213/78; C07D213/84; C07D213/85
Claims Analysis
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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) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |