US2593466A
Expired / Lapsed
US
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Viscose spinning solution
Assignee: Industrial Rayon Corp
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Filing: 1948-07-16
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Granted: 1952-04-22
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Expires: 1968-07-16
Abstract
No abstract record available.
Inventors
- 👤 Robert D Maclaurin
- 👤 William O Israel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:10
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/06; D01F2/08; D01F2/10; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A VISCOSE SPINNING SOLUTION HAVING INCORPORATED THEREIN BETWEEN ABOUT 0.01 AND 0.2%, BY WEIGHT, OF A PRODUCT FORMED BY THE REACTION OF AT LEAST ABOUT 12 MOLES OF AN ALKYLENE OXIDE WITH ONE MEAN MOLE OF A MIXTURE OF PRIMARY ALIPHATIC AMINES SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKENYL AMINES CONTAINING FROM 6 TO 18 CARBON ATOMS; AT LEAST ABOUT 80 MOLE PERCENT OF SAID MIXTURE OF AMINES CONTAINING FROM 12 TO 18 CARBON ATOMS.
Claim 2
Dependent Claim
77 words
A VISCOSE SPINNING SOLUTION HAVING INCORPORATED THEREIN BETWEEN ABOUT 0.01 AND 0.2%, BY WEIGHT, OF A PRODUCT FORMED BY THE REACTION OF AT LEAST ABOUT 12 MOLES OF AN ALKYLENE OXIDE WITH ONE MEAN MOLE OF A MIXTURE OF PRIMARY ALIPHATIC AMINES SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ALKENYL AMINES CONTAINING FROM 6 TO 18 CARBON ATOMS; AT LEAST ABOUT 80 MOLE PERCENT OF SAID MIXTURE OF AMINES CONTAINING FROM 12 TO 18 CARBON ATOMS.
References Cited (Backward Citations)
DE665359C
Cited
GB358114A
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FR789522A
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US2310207A
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US2226119A
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US2442331A
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US2362217A
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US2440094A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-22 | 1955-10-22 | 1956-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-22 | 1959-10-22 | 1960-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-22 | 1963-10-22 | 1964-04-22 | $7700.00 | Window Closed / Lapsed |