US2608565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for utilizing prepared oilbearing material as a filtering agent in solvent extraction by continuous countercurrent flow
Assignee: Individual
•
Filing: 1949-07-02
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Granted: 1952-08-26
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Expires: 1969-07-02
Abstract
No abstract record available.
Inventors
- 👤 Bonotto Miehele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:50
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/02; C11B1/04; C11B1/10; C11B1/102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A PROCESS FOR THE SOLVENT EXTRACTION OF OILBEARING MATERIALS CONSISTING IN SCREENING OF A FLAKED SOLVENT-EXTRACTABLE OIL-BEARING MATERIAL TO SEPARATE AS SCREENING THEREFROM A QUANTITY OF MINUTE PARTICLES COMPRISING FINES, MECHANICALLY PRESSING SUCH MINUTE PARTICLES DERIVED FROM SUCH SCREENING TO PRODUCE A PRODUCT HAVING GRANULAR PIECES EACH COMPOSED OF A COMPRESSED AND GRANULATED MASS OF COARSER AND INCREASED SIZE THAN SAID SCREENING AND OF GREATER DENSITY THAN THE MATERIAL FROM WHICH THE GRANULATED PIECES WERE DERIVED, AND UTILIZING SUCH COMPRESSED AND GRANULATED PIECES AS A FILTERING MATERIAL IN THE EXTRACTION OF THE SOLVENT-EXTRACTABLE OIL-BEARING MATERIAL FROM WHICH SUCH COMPRESSED AND GRANULATED PIECES HAVE BEEN DERIVED.
Claim 2
Dependent Claim
105 words
A PROCESS FOR THE SOLVENT EXTRACTION OF OILBEARING MATERIALS CONSISTING IN SCREENING OF A FLAKED SOLVENT-EXTRACTABLE OIL-BEARING MATERIAL TO SEPARATE AS SCREENING THEREFROM A QUANTITY OF MINUTE PARTICLES COMPRISING FINES, MECHANICALLY PRESSING SUCH MINUTE PARTICLES DERIVED FROM SUCH SCREENING TO PRODUCE A PRODUCT HAVING GRANULAR PIECES EACH COMPOSED OF A COMPRESSED AND GRANULATED MASS OF COARSER AND INCREASED SIZE THAN SAID SCREENING AND OF GREATER DENSITY THAN THE MATERIAL FROM WHICH THE GRANULATED PIECES WERE DERIVED, AND UTILIZING SUCH COMPRESSED AND GRANULATED PIECES AS A FILTERING MATERIAL IN THE EXTRACTION OF THE SOLVENT-EXTRACTABLE OIL-BEARING MATERIAL FROM WHICH SUCH COMPRESSED AND GRANULATED PIECES HAVE BEEN DERIVED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |