Patent US2674628A successfully refreshed from Google Patents.
US2674628A
Expired / Lapsed
US
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Method of making alkyl-nitroaromatic ketones
Assignee: Monsanto Chemicals Ltd
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Filing: 1951-09-17
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Granted: 1954-04-06
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Expires: 1971-09-17
Abstract
No abstract record available.
Inventors
- 👤 Alt Arthur
- 👤 Robert E Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:56
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE METHOD OF MAKING ALKYL-NITROAROMATIC KETONES OF THE GENERAL FORMULA
Claim 2
Independent Claim
10 words
THE METHOD OF MAKING ALKYL-NITROAROMATIC KETONES OF THE GENERAL FORMULA
References Cited (Backward Citations)
US2199585A
Cited
US2245528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |