US3780153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low viscosity melt spinning process
Assignee: Monsanto Co
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Filing: 1969-10-02
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Granted: 1973-12-18
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Expires: 1989-10-02
Abstract
Abstract CONTINUOUS LENGTH FIBERS ARE FORMED FROM INORGANIC MOLTEN MATERIALS OF LOW MELT VISCOSITY. THE CONTINUOUS FIBERS ARE OBTAINED BY EXTRUDING A FREE-FALLING STREAM, FILM-STABILIZING THE STREAM AGAINST THE DISRUPTIVE EFFECTS OF SURFACE TENSION PENDING SOLIDIFICATION, AND DECELERATION THE SOLIDIFIED STEAM AT A SELECTED POINT INTERMEDIATE OF A FIRST POINT (DA) UPSTREAM OF WHICH AN IMPOSED STREAM DECELERATING FORCE CAUSES DISRUPTIONS IN THE STREAM CONTINUITY AND A SECOND POINT (DB) DOWNSTREAM OF WHICH THE NET TENSIONAL FORCE ACTING UPON STREAM RESULTS IN SUBSTANTIALLY UNIFORM FINITE LENGTH FIBERS.
Inventors
- 👤 W Privott
- 👤 R Cunningham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:40
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/005
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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |