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Patent US2438244A successfully refreshed from Google Patents.
US2438244A
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Process for the separation of liquid emulsions
Assignee: Individual
•
Filing: 1939-08-14
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Granted: 1948-03-23
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Expires: 1959-08-14
Abstract
No abstract record available.
Inventors
- 👤 Biazzi Mario
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:28
CPC Classifications
C; C06; C06B; C06B21/00; C06B21/0008; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/04; B01D17/041
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US474685A
Cited
US479130A
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US714822A
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US883608A
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FR431552A
Cited
US1301544A
Cited
FR642586A
Cited
US1908102A
Cited
US2098608A
Cited
US2179919A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-23 | 1951-09-22 | 1952-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-23 | 1955-09-22 | 1956-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-23 | 1959-09-22 | 1960-03-23 | $7700.00 | Window Closed / Lapsed |