Patent US2183552A successfully refreshed from Google Patents.
US2183552A
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Alkylated poly-isopropyl halobenzenes
Assignee: Dow Chemical Co
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Filing: 1937-03-15
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Granted: 1939-12-19
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Expires: 1957-03-15
Abstract
No abstract record available.
Inventors
- 👤 Robert R Dreisbach
- 👤 Heusted George Beal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:51
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/22; H01G4/221; H01G4/222; C; C07; C07C; C07C15/00; C07C15/02; C07C17/00; C07C17/093; C07C17/10; C07C17/12; C07C25/00; C07C25/02
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) | 1942-12-18 | 1943-06-19 | 1943-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-12-18 | 1947-06-19 | 1947-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-12-18 | 1951-06-19 | 1951-12-19 | $7700.00 | Window Closed / Lapsed |