Patent US2474170A successfully refreshed from Google Patents.
US2474170A
Expired / Lapsed
US
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Separation of acetone and butyl alcohol from fermented mash by activated charcoal
Assignee: BUTACET Ltd
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Filing: 1944-07-26
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Granted: 1949-06-21
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Expires: 1964-07-26
Abstract
No abstract record available.
Inventors
- 👤 Sulzbacher Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:11
CPC Classifications
C; C12; C12P; C12P7/00; C12P7/24; C12P7/26; C12P7/28; Y; Y10; Y10S; Y10S435/00; Y10S435/8215; Y10S435/822; Y10S435/842
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US823366A
Cited
US1453215A
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US1528905A
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US1616073A
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US1898688A
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US2114331A
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US2062075A
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US2141798A
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US2120227A
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US2254745A
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US2339386A
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US2261926A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |