US3557271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of net-like materials by extrusion
Assignee: FMC Corp
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Filing: 1967-12-11
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Granted: 1971-01-19
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Expires: 1987-12-11
Abstract
Abstract MANUFACTURE OF EXTRUDED NET-LIKE STRUCTURES BY PROVIDING VOIDS IN A SHAPED STREAM OF FLOWABLE FILM-FORMING MATERIAL WHEREIN THE SAID VOIDS ARE PRODUCED BY OBSTRUCTING THE STREAM IN A DIRECTION GENERALLY PERPENDICULAR TO ITS DIRECTION OF FLOW AT SELECTED AREAS SPACED FROM EACH OTHER IN A DIRECTION TRANSVERSE TO THE DIRECTION OF STREAM FLOW, AND THEREAFTER MERGING PORTIONS ADJACENT OF SUCH STREAMS WITHIN THE DIE NOZZLE AT LONGITUDINALLY SPACED AREAS THEREOF TO OBTAIN SAID EXTRUDED NET-LIKE STRUCTURE.
Inventors
- 👤 Theodore H Fairbanks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:17
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; B29C48/305; B29C48/31; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/11; B29C48/12; B29C48/13; B29L; B29L2007/00; B29L2007/001; B29L2028/00
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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |