US3274250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-phenyl-n'-(1, 2-dimethylpropyl)-p-phenylenediamines
Assignee: Bayer AG
•
Filing: 1963-11-08
•
Granted: 1966-09-20
•
Expires: 1983-11-08
Abstract
No abstract record available.
Inventors
- 👤 Schneider Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:54
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734808A
Cited
US2656389A
Cited
US2692288A
Cited
US2809955A
Cited
US2810709A
Cited
GB811220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |