US2211162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent recovery system
Assignee: Carbide and Carbon Chemicals Corp
•
Filing: 1938-02-05
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Granted: 1940-08-13
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Expires: 1958-02-05
Abstract
No abstract record available.
Inventors
- 👤 Arthur B Ray
- 👤 Leonard A Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:58
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0423; B01D2253/00; B01D2253/10; B01D2253/102; B01D2257/00; B01D2257/70; B01D2257/704; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40088; B01D2259/4009; B01D2259/41
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) | 1943-08-13 | 1944-02-12 | 1944-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-08-13 | 1948-02-12 | 1948-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-08-13 | 1952-02-12 | 1952-08-13 | $7700.00 | Window Closed / Lapsed |