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US3378465A
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Purification of solvents containing c5 dimers by azeotropic distillation with water
Assignee: Bayer AG
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Filing: 1964-08-20
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Granted: 1968-04-16
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Expires: 1984-08-20
Abstract
No abstract record available.
Inventors
- 👤 Brandt Hans-Walther
- 👤 Schleppinghoff Bernhard
- 👤 Bitners Feliks
- 👤 Meier Erich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 09:30
CPC Classifications
C; C10; C10G; C10G21/00; C10G21/28; B; B01; B01D; B01D3/00; B01D3/34; B01D3/36; C07; C07C; C07C7/00; C07C7/04; C07C7/05; C07C7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2388834A
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US3012947A
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US3059037A
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US3169998A
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US3210259A
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US3230157A
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US3248308A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |