US2939814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of fibrous materials with coating or impregnating agents
Assignee: Jointine Products Co Ltd
•
Filing: 1956-01-31
•
Granted: 1960-06-07
•
Expires: 1976-01-31
Abstract
No abstract record available.
Inventors
- 👤 Philip H Amphlett
- 👤 Dundas James
- 👤 Geoffrey L H Woodthorpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:10
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/10; D21H13/36; D21H13/38; D21H13/42; D21H17/00; D21H17/20; D21H17/33; D21H17/34; D21H17/36; D21H17/46; D21H17/53; D21H23/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
IN THE METHOD OF COATING FIBRES IN WHICH A WATERINSOLUBLE FIBRE-COATING SUBSTANCE IS DEPOSITED ON THE FIBERS FROM AN AQUEOUS DISPERSION THEREOF, THE STEPS WHICH COMPRISES FORMING AN AQUEOUS DISPERSION OF THE FIBRES TO BE COATED AND A POLYMERIC HEAT-SENSITIVE COAGULANT FOR THE FIBRE-COATING SUBSTANCE COMPRISING A POLYVINYL ALKYL ETHER, SAID POLYVINYL ALKYL ETHER BEING DECREASINGLY SOLUBLE IN WATER AS THE TEMPERATURE OF THE WATER IS RAISED, HEATING SAID DISPERSION TO A TEMPERATURE SUFFICIENTLY HIGH TO PRECIPITATE POLYVINYL ALKYL ETHER THEREFROM WITH RESULTANT DEPOSITION OF SAID POLYVINYL ALKYL ETHER ON SAID FIBRES, AND THEREAFTER ADDING TO THE RESULTANT DISPERSION OF FIBRES AN AQUEOUS DISPERSION OF THE WATER-INSOLUBLE FIBRE-COATING SUBSTANCE.
Claim 2
Dependent Claim
109 words
IN THE METHOD OF COATING FIBRES IN WHICH A WATERINSOLUBLE FIBRE-COATING SUBSTANCE IS DEPOSITED ON THE FIBERS FROM AN AQUEOUS DISPERSION THEREOF, THE STEPS WHICH COMPRISES FORMING AN AQUEOUS DISPERSION OF THE FIBRES TO BE COATED AND A POLYMERIC HEAT-SENSITIVE COAGULANT FOR THE FIBRE-COATING SUBSTANCE COMPRISING A POLYVINYL ALKYL ETHER, SAID POLYVINYL ALKYL ETHER BEING DECREASINGLY SOLUBLE IN WATER AS THE TEMPERATURE OF THE WATER IS RAISED, HEATING SAID DISPERSION TO A TEMPERATURE SUFFICIENTLY HIGH TO PRECIPITATE POLYVINYL ALKYL ETHER THEREFROM WITH RESULTANT DEPOSITION OF SAID POLYVINYL ALKYL ETHER ON SAID FIBRES, AND THEREAFTER ADDING TO THE RESULTANT DISPERSION OF FIBRES AN AQUEOUS DISPERSION OF THE WATER-INSOLUBLE FIBRE-COATING SUBSTANCE.
References Cited (Backward Citations)
US1811695A
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US1996079A
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US1968887A
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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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |