Patent US3908889A successfully refreshed from Google Patents.
Patent US3589977A successfully refreshed from Google Patents.
US3589977A
Expired / Lapsed
US
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Method of and apparatus for imparting combined rotational,pulsatory,and circulatory movements to a suspension of fibers
Assignee: BREVETS GRANOFIBRE SEBREG SOC
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Filing: 1968-04-26
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Granted: 1971-06-29
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Expires: 1988-04-26
Abstract
Abstract A METHOD OF PRODUCING GENERALLY SPHERICAL FIBROUS AGGREGATES FROM A SUSPENSION OF FIBRES IN A LIQUID, IN WHICH THE FIBRES ARE CAUSED TO ROTATE ABOUT THEMSELVES AND IN CIRCULATION TO ENGENDER SPEED GRADIENTS THEREIN, AND IN ADDITION PULSATORY MOVEMENT IS APPLIED TO THE SUSPENSION TO ENGENDER AN EBB AND FLOW THEREIN. THE APPARATUS INCLUDES AN OUTER CONTAINER WITH AT LEAST ONE ROTOR LOCATED THEREWITHIN AND MOUNTED FOR ECCENTRIC ROTATION TO PRODUCE THE EBB AND FLOW THEREIN.
Inventors
- 👤 Jean Fournet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:48
CPC Classifications
B; B01; B01J; B01J2/00; D; D21; D21B; D21B1/00; D21B1/04; D21B1/12
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |