Patent US2564670A successfully refreshed from Google Patents.
Patent US3555537A successfully refreshed from Google Patents.
US3555537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for monitoring properties of polymer and yarn produced therefrom
Assignee: EIDP Inc
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Filing: 1967-12-22
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Granted: 1971-01-12
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Expires: 1987-12-22
Abstract
Abstract IN A PROCESS FOR PRODUCING OR MODIFYING YARN FROM SYNTHETIC POLYMER WHEREIN, UNDER DESIRED OPERATING CONDITIONS, ELECTRICAL POWER IS UTILIZED AT AN ESSENTIALLY CONSTANT LEVEL IN AT LEAST ONE STEP OF THE PROCESS, A METHOD FOR DETERMING DEVIATIONS IN POLYMER AND YARN PROPERTIES FROM A DESIRED LEVEL. VARIATIONS IN THE ELECTRICAL POWER UTILIZED, CORRESPONDING TO DEVIATIONS IN PROCESS OPERATING CONDITIONS, ARE DETECTED, CHARACTERIZED AND COMPARED TO KNOWN CHARACTERISTICS REPRESENTATIVE OF DESIRED OPERATING CONDITIONS WHICH HAVE BEEN CORRELATED TO DESIRED POLYMER AND YARN PROPERTIES.
Inventors
- 👤 William Thomas Windley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:24
CPC Classifications
D; D01; D01D; D01D1/00; D01D1/06; D01D1/09
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |