Patent US3427146A successfully refreshed from Google Patents.
US3427146A
Expired / Lapsed
US
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Phenoxypyridazines as herbicides
Assignee: Sankyo Co Ltd
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Filing: 1966-03-23
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Granted: 1969-02-11
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Expires: 1986-03-23
Abstract
No abstract record available.
Inventors
- 👤 Saburo Tamura
- 👤 Tetsuo Takematsu
- 👤 Kozo Oyamada
- 👤 Teruomi Jojima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:24
CPC Classifications
C; C07; C07D; C07D237/00; C07D237/02; C07D237/06; C07D237/10; C07D237/14; A; A01; A01N; A01N43/00; A01N43/48; A01N43/58
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) | 1972-02-11 | 1972-08-12 | 1973-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-11 | 1976-08-12 | 1977-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-11 | 1980-08-12 | 1981-02-11 | $7700.00 | Window Closed / Lapsed |