Patent US2908944A successfully refreshed from Google Patents.
US2908944A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of staple fiber
Assignee: Akzona Inc
•
Filing: 1956-02-02
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Granted: 1959-10-20
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Expires: 1976-02-02
Abstract
No abstract record available.
Inventors
- 👤 Benninga Noach
- 👤 Jr Joseph E Johnston
- 👤 Ridgeway T Lynch
- 👤 Paul W Markwood
- 👤 Ross L Parks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:32
CPC Classifications
D; D01; D01D; D01D10/00; D01D10/04; D01D10/049; D01D5/00; D01D5/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR THE MANUFACTURE OF STAPLE FIBER FROM A TOW OF FILAMENTS PREDOMINANATLY OF POLYMERIZED CAPROLACTAN AND STILL CONTAINING WATER SOLUBLE MATERIALS COMPRISING THE STEPS OF DRAWING SAID TOW, SUBJECTING SAID TOW TO A CRIMPING OPERATION, PROPELLING SAID TOW THROUGH A SERIES OF CONDUITS SOLEY BY VIRTUE OF THE FLOW OF HOT WATER THERETHROUGH, SAID WATER BEING MAINTAINED AT A TEMPERATURE OF AT LEAST 75*C., PROPELLING SAID TOW THROUGH A SECOND SERIES OF CONDUITS SOLELY BY VIRTUE OF THE FLOW OF A FINISHING LIQUID THERETHROUGH, THE INDIVIDUAL FILAMENTS OF SAID TOW DURING THEIR TRAVEL WITHIN SAID CONDUITS BEING SEPARATED AND DISTRUBED BY THE FLOWING LIQUID THEREIN, AND THEREAFTER CUTTING SAID TOW INTO STAPLE LENGTHS.
Claim 2
Dependent Claim
115 words
A PROCESS FOR THE MANUFACTURE OF STAPLE FIBER FROM A TOW OF FILAMENTS PREDOMINANATLY OF POLYMERIZED CAPROLACTAN AND STILL CONTAINING WATER SOLUBLE MATERIALS COMPRISING THE STEPS OF DRAWING SAID TOW, SUBJECTING SAID TOW TO A CRIMPING OPERATION, PROPELLING SAID TOW THROUGH A SERIES OF CONDUITS SOLEY BY VIRTUE OF THE FLOW OF HOT WATER THERETHROUGH, SAID WATER BEING MAINTAINED AT A TEMPERATURE OF AT LEAST 75*C., PROPELLING SAID TOW THROUGH A SECOND SERIES OF CONDUITS SOLELY BY VIRTUE OF THE FLOW OF A FINISHING LIQUID THERETHROUGH, THE INDIVIDUAL FILAMENTS OF SAID TOW DURING THEIR TRAVEL WITHIN SAID CONDUITS BEING SEPARATED AND DISTRUBED BY THE FLOWING LIQUID THEREIN, AND THEREAFTER CUTTING SAID TOW INTO STAPLE LENGTHS.
References Cited (Backward Citations)
US1153004A
Cited
US1871100A
Cited
US2186135A
Cited
US2575838A
Cited
US2733122A
Cited
US2725277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |