US2741894A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing yarns
Assignee: University of Minnesota Twin Cities
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Filing: 1953-05-28
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Granted: 1956-04-17
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Expires: 1973-05-28
Abstract
No abstract record available.
Inventors
- 👤 Leroy E Schulze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:36
CPC Classifications
D; D01; D01B; D01B9/00; Y; Y10; Y10S; Y10S56/00; Y10S56/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE PROCESS OF PREPARING FINE LINEN YARNS FROM MATURE SEED FLAX WHICH COMPRISES THE STEPS OF MOWING THE FIELD-RIPENED SEED FLAX, SEPARATING THE FLAX SEED FROM THE STRAW IN THE FIELD, DEPOSITING THE SEPARATED FLAX STRAW ON THE CUT-OVER STUBBLE FIELD, THERE SUBJECTING THE FLAX STRAW TO A FIELD WEATHERING TREATMENT, MECHANICALLY LIBERATING THE BAST FIBERS OF THE WEATHERED STRAW FROM THE SHIVEY MATERIAL, FORMING A ROVING OF THE BAST FIBERS, CONDITIONING THE FIBERS FOR SPINNING BY CONTACTING WITH AN AQUEOUS TREATING AGENT, DRAFTING THE FIBERS WHILE STILL WET AND SPINNING THE FIBERS INTO YARNS.
Claim 2
Dependent Claim
95 words
THE PROCESS OF PREPARING FINE LINEN YARNS FROM MATURE SEED FLAX WHICH COMPRISES THE STEPS OF MOWING THE FIELD-RIPENED SEED FLAX, SEPARATING THE FLAX SEED FROM THE STRAW IN THE FIELD, DEPOSITING THE SEPARATED FLAX STRAW ON THE CUT-OVER STUBBLE FIELD, THERE SUBJECTING THE FLAX STRAW TO A FIELD WEATHERING TREATMENT, MECHANICALLY LIBERATING THE BAST FIBERS OF THE WEATHERED STRAW FROM THE SHIVEY MATERIAL, FORMING A ROVING OF THE BAST FIBERS, CONDITIONING THE FIBERS FOR SPINNING BY CONTACTING WITH AN AQUEOUS TREATING AGENT, DRAFTING THE FIBERS WHILE STILL WET AND SPINNING THE FIBERS INTO YARNS.
References Cited (Backward Citations)
US1209546A
Cited
US2468771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |