Patent US2470336A successfully refreshed from Google Patents.
US2470336A
Expired / Lapsed
US
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Halogenation of aromatic hydrocarbons
Assignee: Lummus Technology LLC
•
Filing: 1945-07-20
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Granted: 1949-05-17
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Expires: 1965-07-20
Abstract
No abstract record available.
Inventors
- 👤 Austin S Brunjes
- 👤 Marcel J P Bogart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:45
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/10; C07C17/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US914223A
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US1180964A
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US1380067A
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US1432761A
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US1892397A
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US2016658A
Cited
GB513947A
Cited
US2395777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-16 | 1952-11-15 | 1953-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-16 | 1956-11-15 | 1957-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-16 | 1960-11-15 | 1961-05-17 | $7700.00 | Window Closed / Lapsed |