Patent US3277175A successfully refreshed from Google Patents.
US3277175A
Expired / Lapsed
US
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Preparation of p-nitrodiphenylamines
Assignee: Eastman Kodak Co
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Filing: 1963-11-26
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Granted: 1966-10-04
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Expires: 1983-11-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Milton Lewis Clemens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:16
CPC Classifications
C; C07; C07C; C07C209/00; C07C209/30; C07C209/04; C07C209/06; C07C209/10; C07C209/32; C07C209/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
IN THE PROCESS OF PREPARING A P-NITRODIPHENYLAMINE HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
11 words
IN THE PROCESS OF PREPARING A P-NITRODIPHENYLAMINE HAVING THE STRUCTURAL FORMULA
References Cited (Backward Citations)
US3055940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |