Patent US3236871A successfully refreshed from Google Patents.
US3236871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3, 5-dinitro-o-toluhydroxamic acid and esters and anhydrides thereof
Assignee: Dow Chemical Co
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Filing: 1961-02-09
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Granted: 1966-02-22
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Expires: 1981-02-09
Abstract
No abstract record available.
Inventors
- 👤 Charles W Hinman
- 👤 Robert O Dorton
- 👤 Reifschneider Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:01
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND CORRESPONDING TO THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |