Patent US3614809A successfully refreshed from Google Patents.
US3614809A
Expired / Lapsed
US
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Means for producing high surface area fibers
Assignee: Universal Oil Products Co
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Filing: 1968-12-27
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Granted: 1971-10-26
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Expires: 1988-12-27
Abstract
Abstract MEANS FOR CONTINUOUSLY PRODUCING SMALL DIAMETER FIBERS OF AN INORGANIC OXIDE MATRIAL, SUCH AS ALUMINA, BY FEEDING A VISCOUS SOL OF THE MATERIAL ONTO THE SURFACE OF AT LEAST ONE OF A SET OF "DRAWING" SURFACES AND THEN CAUSING THE MEETING AND WITHDRAWAL OF SUCH SURFACES TO EFFECT THE FORMATION OF FILAMENTS OF SEMI-SET SOL. THE RESULTING FILAMENTS OF FIBERS ARE PREFERABLY CONTINUOUSLY COLLECTED FROM BETWEEN THE "DRAWING" SURFACES BY MECHANICALLY MOVING ROD MEANS THAT ARE POSITIONED TO PASS BETWEEN SUCH SURFACES.
Inventors
- 👤 John C Hayes
- 👤 Jay E Sobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:10
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/62227; C04B35/62231
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) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |