US2684359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of aromatic nitrolgen compounds
Assignee: Honeywell International Inc
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Filing: 1952-01-08
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Granted: 1954-07-20
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Expires: 1972-01-08
Abstract
No abstract record available.
Inventors
- 👤 Sogn Allen Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:28
CPC Classifications
C; C07; C07C; C07C241/00; C07C241/02; C07C201/00; C07C201/06; C07C201/08; C07C209/00; C07C209/30; C07C209/32; C07C209/36; C07C211/00; C07C211/43; C07C211/44; C07C211/49; C07C211/50; C07C211/51; C07C215/00; C07C215/74; C07C215/76; C07C243/00; C07C243/10; C07C243/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE IMPROVEMENT IN THE METHOD OF REDUCING AN AROMATIC NITROGEN COMPOUND CONTAINING NITROGEN IN A REDUCIBLE FORM AS A NUCLEAR SUBSTITUENT AT A HIGHER STAGE OF A OXIDATION THAN THE HYDRAZO STAGE BY THE ACTION OF A METAL ALCHOLATE, WHICH COMPRISES CARRYING OUT THE REDUCTION IN A REACTION MIXTURE CONTAINING A HYDROXYNAPHTHALENE SELECTED FROM THE GROUP CONSISTING OF THE NAPHTHOLS, 8-HYDROXY-1-NAPHTHOL, 8-AMINO-1-NAPHTHOL, 5-AMINO-2-NAPHTHOL, 2-NAPHTHOL-4-SULFONIC ACID AND 2-NAPHTHOL-3-CARBOXYLIX ACID, WHEREBY THE REDUCTION OF THE AROMATIC NITROGEN COMPOUND IS PROMOTED.
Claim 2
Dependent Claim
78 words
THE IMPROVEMENT IN THE METHOD OF REDUCING AN AROMATIC NITROGEN COMPOUND CONTAINING NITROGEN IN A REDUCIBLE FORM AS A NUCLEAR SUBSTITUENT AT A HIGHER STAGE OF A OXIDATION THAN THE HYDRAZO STAGE BY THE ACTION OF A METAL ALCHOLATE, WHICH COMPRISES CARRYING OUT THE REDUCTION IN A REACTION MIXTURE CONTAINING A HYDROXYNAPHTHALENE SELECTED FROM THE GROUP CONSISTING OF THE NAPHTHOLS, 8-HYDROXY-1-NAPHTHOL, 8-AMINO-1-NAPHTHOL, 5-AMINO-2-NAPHTHOL, 2-NAPHTHOL-4-SULFONIC ACID AND 2-NAPHTHOL-3-CARBOXYLIX ACID, WHEREBY THE REDUCTION OF THE AROMATIC NITROGEN COMPOUND IS PROMOTED.
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) | 1957-07-19 | 1958-01-18 | 1958-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-19 | 1962-01-18 | 1962-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-19 | 1966-01-18 | 1966-07-20 | $7700.00 | Window Closed / Lapsed |