Patent US3426031A successfully refreshed from Google Patents.
US3426031A
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US
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3,5,6 - trichloro - 4 - (3 - (alpha,alpha,alpha,alpha',alpha',alpha'-hexafluoro - 3,5 - xylyl)ureido) picolinic acid and the corresponding amide derivative
Assignee: Dow Chemical Co
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Filing: 1967-01-19
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Granted: 1969-02-04
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Expires: 1987-01-19
Abstract
No abstract record available.
Inventors
- 👤 Bryant C Fischback
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:34
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/78; C07D213/79; C07D213/84
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3293257A
Cited
US3330641A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-04 | 1972-08-05 | 1973-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-04 | 1976-08-05 | 1977-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-04 | 1980-08-05 | 1981-02-04 | $7700.00 | Window Closed / Lapsed |