Patent US2910463A successfully refreshed from Google Patents.
US2910463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenylazo formamides and production thereof
Assignee: Bayer AG
•
Filing: 1958-01-16
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Granted: 1959-10-27
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Expires: 1978-01-16
Abstract
No abstract record available.
Inventors
- 👤 Koln-Mulheim Ewald Urbschat
- 👤 Grewe Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:43
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
11 words
PHENYLAZO FORMAMIDES, SUBSTITUTED BY SUBSTITUTED AMINO GROUPS OF THE FOLLOWING FORMULA
Claim 2
Dependent Claim
11 words
PHENYLAZO FORMAMIDES, SUBSTITUTED BY SUBSTITUTED AMINO GROUPS OF THE FOLLOWING FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |