US3644422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-(substituted phenoxymethyl) dioxolanes
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1970-03-26
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Granted: 1972-02-22
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Expires: 1990-03-26
Abstract
Abstract PHENOXYACETALDEHYDE ETHYLENEACETAL DERIVATIVES REPRESENTED BY THE FORMULA, 2-(((CL)M,(CH3-)N-PHENYL)-O-CH2-)-1,3-DIOXOLANE WHEREIN M AND N ARE O OR AN INTEGER OF 1 TO 5, AND THE SUM OF M AND N IS 1 TO 5, WHICH MAY BE USEFUL AS HERBICIDAL COMPOSITIONS WITH HIGH HERICIDAL ACTIVITIES ON BOTH BROADLEAVED AND GRASS WEEDS AND LOWER TOXICITIES ON FISHES.
Inventors
- 👤 Akihiko Mine
- 👤 Takeo Satomi
- 👤 Naganori Hino
- 👤 Katsuzo Kamoshita
- 👤 Yoshitsugu Suzuki
- 👤 Shinji Nakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:46
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/14; C07D317/18; C07D317/22
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |