US3055940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of nitrodiphenylamines by catalyzed condensation
Assignee: Uniroyal Inc
•
Filing: 1957-11-05
•
Granted: 1962-09-25
•
Expires: 1977-11-05
Abstract
No abstract record available.
Inventors
- 👤 Paul L Merz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:54
CPC Classifications
C; C07; C07C; C07C211/00; C07C211/43; C07C211/44; C07C211/52; C07C209/00; C07C209/04; C07C209/06; C07C209/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
IN THE PROCESS OF PREPARING COMPOUNDS REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
10 words
IN THE PROCESS OF PREPARING COMPOUNDS REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
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Cited
US2837518A
Cited
US2078527A
Cited
US2558285A
Cited
US2572067A
Cited
US2927943A
Cited
US2888459A
Cited
US2924620A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-24 | 1966-03-26 | 1966-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-24 | 1970-03-26 | 1970-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-24 | 1974-03-26 | 1974-09-25 | $7700.00 | Window Closed / Lapsed |