US2347669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distillation process
Assignee: U S Ind Chemicals Inc
•
Filing: 1941-08-29
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Granted: 1944-05-02
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Expires: 1961-08-29
Abstract
No abstract record available.
Inventors
- 👤 Dennis Wolcott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:59
CPC Classifications
C; C12; C12F; C12F3/00; C12F3/10; C05; C05F; C05F5/00; C05F5/006; C05F5/008; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/20; Y10; Y10S; Y10S203/00; Y10S203/11
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) | 1947-05-02 | 1947-11-01 | 1948-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-02 | 1951-11-01 | 1952-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-02 | 1955-11-01 | 1956-05-02 | $7700.00 | Window Closed / Lapsed |