Patent US2695304A successfully refreshed from Google Patents.
US2695304A
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Oil extraction and drying process
Assignee: French Oil Mill Machinery Co
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Filing: 1949-06-02
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Granted: 1954-11-23
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Expires: 1969-06-02
Abstract
No abstract record available.
Inventors
- 👤 Roy W Barns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:03
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/34; B01D3/36; C; C11; C11B; C11B1/00; C11B1/10; C11B1/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A METHOD OF DRYING A MATERIAL HAVING A QUANTITY OF WATER THEREIN COMPRISING THE STEPS OF CONFINING THE MATERIAL IN A CLOSED CHAMBER, INTRODUCING HOT VAPORS OF DRY, WATER IMMISCIBLE AZEOTROPE FORMING SOLVENT INTO THE CHAMBER AND INTO CONTACT WITH THE MATERIAL, CONDENSING A PORTION OF VAPORS ON THE MATERIAL THEREBY TO TRANSFER LATEN HEAT FROM SAID VAPOR DIRECTLY TO THE MATERIAL, MAINTAINING THE MATERIAL AND SOLVENT AT A TEMPERATURE BETWEEN THAT OF THE BOILING POINT OF THE PURE SOLVENT AND ITS AZEOTROPE WITH WATER, THEREBY TO FORM A VAPOR MIX-
Claim 2
Independent Claim
91 words
A METHOD OF DRYING A MATERIAL HAVING A QUANTITY OF WATER THEREIN COMPRISING THE STEPS OF CONFINING THE MATERIAL IN A CLOSED CHAMBER, INTRODUCING HOT VAPORS OF DRY, WATER IMMISCIBLE AZEOTROPE FORMING SOLVENT INTO THE CHAMBER AND INTO CONTACT WITH THE MATERIAL, CONDENSING A PORTION OF VAPORS ON THE MATERIAL THEREBY TO TRANSFER LATEN HEAT FROM SAID VAPOR DIRECTLY TO THE MATERIAL, MAINTAINING THE MATERIAL AND SOLVENT AT A TEMPERATURE BETWEEN THAT OF THE BOILING POINT OF THE PURE SOLVENT AND ITS AZEOTROPE WITH WATER, THEREBY TO FORM A VAPOR MIX-
References Cited (Backward Citations)
US1504588A
Cited
US1503751A
Cited
US1721686A
Cited
US1862945A
Cited
US2187208A
Cited
US2097147A
Cited
US2225799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-22 | 1958-05-24 | 1958-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-22 | 1962-05-24 | 1962-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-22 | 1966-05-24 | 1966-11-23 | $7700.00 | Window Closed / Lapsed |