US2824035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making stiffened composite fabrics
Assignee: Acordis UK Ltd
•
Filing: 1955-01-11
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Granted: 1958-02-18
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Expires: 1975-01-11
Abstract
No abstract record available.
Inventors
- 👤 Finlayson Donald
- 👤 Alford Maitland Walton
- 👤 Pfeil William Parkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:11
CPC Classifications
D; D06; D06M; D06M17/00; D06M17/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
THE PROCESS WHICH COMPRISES FORMING A FABRIC LAMINATE BY BONDING TOGETHER UNDER HEAT AND PRESSURE A NONTHERMOPLASTIC FABRIC AND A FABRIC CONTAINING HIGH-ACETYL CELLULOSE ACETATE MELT-SPUN FIBRES WITH THE AID OF A LIQUID THAT, AT THE PRESSING TEMPERATURE, HAS A STRONG SOFTENING ACTION ON THE CELLULOSE ACETATE FIBRES, BUT NOT ON THE NONTHERMOPLASTIC FIBRES, THE CELLULOSE ACETATE CONTAINING 6062.5% OF COMBINED ACETIC ACID, AND THE SOFTENING LIQUID COMPRISING A MAJOR PROPORTION OF ACETONE AND A MINOR PROPORTION OF A LIQUID SELECTED FROM THE CLASS CONSISTING OF CYCLOHEXANONE, CYCLOPENTANONE AND THE METHYL CYCLOHEXANONES.
Claim 2
Dependent Claim
92 words
THE PROCESS WHICH COMPRISES FORMING A FABRIC LAMINATE BY BONDING TOGETHER UNDER HEAT AND PRESSURE A NONTHERMOPLASTIC FABRIC AND A FABRIC CONTAINING HIGH-ACETYL CELLULOSE ACETATE MELT-SPUN FIBRES WITH THE AID OF A LIQUID THAT, AT THE PRESSING TEMPERATURE, HAS A STRONG SOFTENING ACTION ON THE CELLULOSE ACETATE FIBRES, BUT NOT ON THE NONTHERMOPLASTIC FIBRES, THE CELLULOSE ACETATE CONTAINING 6062.5% OF COMBINED ACETIC ACID, AND THE SOFTENING LIQUID COMPRISING A MAJOR PROPORTION OF ACETONE AND A MINOR PROPORTION OF A LIQUID SELECTED FROM THE CLASS CONSISTING OF CYCLOHEXANONE, CYCLOPENTANONE AND THE METHYL CYCLOHEXANONES.
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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) | 1961-02-17 | 1961-08-19 | 1962-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-17 | 1965-08-19 | 1966-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-17 | 1969-08-19 | 1970-02-18 | $7700.00 | Window Closed / Lapsed |