Patent US3637720A successfully refreshed from Google Patents.
US3637720A
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US
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Certain substituted pyridyl phenyl ethers
Assignee: Ishihara Sangyo Kaisha Ltd
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Filing: 1968-06-17
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Granted: 1972-01-25
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Expires: 1988-06-17
Abstract
Abstract A COMPOUND HAVING THE FORMULA 2-(((X)M,(Z)(5-M)-PHENYL)-O-),(Y)N,(X)(4-N)-PYRIDINE WHEREIN X REPRESENTS A HYDROGEN ATOM, Y BEING A CHLORINE ATOM, OR A METHYL RADICAL; N IS AN INTEGER OF 1 TO 4; Z REPRESENTS A CHLORINE ATOM, A METHYL RADICAL, OR A NITRO RADICAL; AND M IS AN INTEGER OF 1 TO 5, AND A HERBICIDALLY EFFECTIVE SALT OR N-OXIDE THEREOF.
Inventors
- 👤 Ryuzo Nishiyama
- 👤 Kanichi Fujikawa
- 👤 Fumio Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:04
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/62; C07D213/63; C07D213/64; C07D213/643; C07D213/89
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |