US3350449A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4, 4'-diamino-nu-methyl-diphenyl-amines
Assignee: Uniroyal Inc
•
Filing: 1963-09-25
•
Granted: 1967-10-31
•
Expires: 1983-09-25
Abstract
No abstract record available.
Inventors
- 👤 Edward L Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:18
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
A COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2494059A
Cited
US3265736A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |