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US1798713A
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Recovery of solvents
Assignee: National Aniline and Chemical Co Inc
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Filing: 1924-12-31
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Granted: 1931-03-31
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Expires: 1944-12-31
Abstract
No abstract record available.
Inventors
- 👤 Justin F Wait
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:16
CPC Classifications
C; C07; C07C; C07C227/00; C07C227/26; B; B01; B01D; B01D3/00; B01D3/34; B01D3/38; B01D53/00; B01D53/002; B01J; B01J10/00; B01D2257/00; B01D2257/40; B01D2257/406; B01D2257/70; B01D2257/702; B01D2257/7027; B01D2257/704
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) | 1934-03-30 | 1934-09-29 | 1935-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-30 | 1938-09-29 | 1939-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-30 | 1942-09-29 | 1943-03-31 | $7700.00 | Window Closed / Lapsed |