Patent US2239365A successfully refreshed from Google Patents.
US2435544A
Expired / Lapsed
US
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Method of nitrating organic compounds
Assignee: AUTOXYGEN Inc
•
Filing: 1947-04-16
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Granted: 1948-02-03
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Expires: 1967-04-16
Abstract
No abstract record available.
Inventors
- 👤 Vaman R Kokatnur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:57
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/08; C07B; C07B43/00; C07B43/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1908523A
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GB360394A
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US1967551A
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US1980537A
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US1973559A
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US2150557A
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US2209150A
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US2225564A
Cited
US2243471A
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US2256999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-02 | 1951-08-04 | 1952-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-02 | 1955-08-04 | 1956-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-02 | 1959-08-04 | 1960-02-03 | $7700.00 | Window Closed / Lapsed |