US2585355A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of introducing an amino
Assignee: —
•
Filing: —
•
Granted: 1952-02-12
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Expires: 1969-02-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:05
CPC Classifications
C; C09; C09B; C09B5/00; C09B5/24; C09B5/44; C09B5/46; C09B5/48; C07; C07C; C07C245/00; C07C245/02; C07C245/06; C07C245/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
METHOD OF FORMING AROMATIC AMINO COMPOUNDS COMPRISING REACTING THE AROMATIC COMPOUND AT A TEMPERATURE NOT EXCEEDING APPROXIMATELY 100* C. WITH A MOLECULARLY EQUIVALENT QUANTITY OF AN AMINATING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXYL AMINE, HYDROXYL AMINE SALTS, HYDROXYL AMINE DISULFONIC ACID, AND PRIMARY NITRO PARAFFINS IN A SOLUTION OF CONCENKTRATED SULFURIC ACID HAVING COMPLETELY DISSOLVED THEREIN A CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID SOLUBLE SALTS OF VANADIUM, MOLYBDENUM, TITANIUM, ZIRCONIUM, THORIUM, MERCURY, AND IRON AND SEPARATING THE AROMATIC AMINE FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
88 words
METHOD OF FORMING AROMATIC AMINO COMPOUNDS COMPRISING REACTING THE AROMATIC COMPOUND AT A TEMPERATURE NOT EXCEEDING APPROXIMATELY 100* C. WITH A MOLECULARLY EQUIVALENT QUANTITY OF AN AMINATING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXYL AMINE, HYDROXYL AMINE SALTS, HYDROXYL AMINE DISULFONIC ACID, AND PRIMARY NITRO PARAFFINS IN A SOLUTION OF CONCENKTRATED SULFURIC ACID HAVING COMPLETELY DISSOLVED THEREIN A CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID SOLUBLE SALTS OF VANADIUM, MOLYBDENUM, TITANIUM, ZIRCONIUM, THORIUM, MERCURY, AND IRON AND SEPARATING THE AROMATIC AMINE FROM THE REACTION MIXTURE.
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) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |