Patent US3644543A successfully refreshed from Google Patents.
US3644543A
Expired / Lapsed
US
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Process for preparing halogenated aromatics
Assignee: Gulf Research and Development Co
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Filing: 1969-07-03
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Granted: 1972-02-22
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Expires: 1989-07-03
Abstract
Abstract A PROCESS FOR PREPARING A NUCLEAR CHLORO OR NUCLEAR BROMO AROMATIC COMPOUND WHICH INVLOVES HEATING AN AROMATIC COMPOUND IN THE PRESENCE OF A NITRATE ION, A NITRATE ION, NO OR NO2, A CHLORIDE OR BROMIDE ION, WATER, OXYGEN AND A FATTY CARBOXYLIC ACID.
Inventors
- 👤 Vincent A Notaro
- 👤 Charles M Selwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:33
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/15; C07C17/152; C07C17/156; C07C17/158
Claims Analysis
Total Claims: 0
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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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |