US2675374A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of diazoamino
Assignee: —
•
Filing: —
•
Granted: 1954-04-13
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Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:19
CPC Classifications
C; C09; C09B; C09B39/00; C07; C07C; C07C245/00; C07C245/22; C07C245/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
IN A PROCESS FOR THE PREPARATION OF A DIAZOAMINO DERIVATIVE WHICH INVOLVES CONDENSATION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIAZO DERIVATIVES OF AROMATIC MONOAMINES AND TETRAZO DERIVATIVES OF AROMATIC DIAMINES NOT CONTAINING OTHER SOLUBILIZING GROUPS THAN THE DIAZO GROUP, IN A MEDIUM HAVING A PH OF AT LEAST ABOUT 7.0, WITH AN N-SUBSTITUTED DERIVATIVE OF GLYCINE HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
64 words
IN A PROCESS FOR THE PREPARATION OF A DIAZOAMINO DERIVATIVE WHICH INVOLVES CONDENSATION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIAZO DERIVATIVES OF AROMATIC MONOAMINES AND TETRAZO DERIVATIVES OF AROMATIC DIAMINES NOT CONTAINING OTHER SOLUBILIZING GROUPS THAN THE DIAZO GROUP, IN A MEDIUM HAVING A PH OF AT LEAST ABOUT 7.0, WITH AN N-SUBSTITUTED DERIVATIVE OF GLYCINE HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-12 | 1957-10-12 | 1958-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-12 | 1961-10-12 | 1962-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-12 | 1965-10-12 | 1966-04-13 | $7700.00 | Window Closed / Lapsed |