US2828528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Finishing polyester fabrics
Assignee: EIDP Inc
•
Filing: 1956-12-12
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Granted: 1958-04-01
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Expires: 1976-12-12
Abstract
No abstract record available.
Inventors
- 👤 Navin J Gajjar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:34
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/32; D06M11/36; D06M11/38; D06Q; D06Q1/00; Y; Y10; Y10S; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR TREATING A POLYETHYLENE TEREPHTHALATE FABRIC WHICH COMPRISES DEFORMING THE FABRIC BY MEANS OF COMPRESSIVE FORCE APPLIED TO AT LEAST 50% OF THE SURFACE AREA OF THE FABRIC AND DISTRIBUTED UNIFORMLY OVER THE ENTIRE SURFACE ARE OF THE FABRIC AT A TEMPERATURE BETWEEN ABOUT 100*F. AND 450*F., HEAT SETTING THE FABRIC BY SUBJECTING IT TO DRY HEAT AT A TEMPERATURE FROM ABOUT 250*F. TO ABOUT 450*F. AND THEN IMMERSING THE FABRIC IN AN AQUEOUS ALKALINE SOLUTION UNTIL THE FABRIC HAS LOST AT LEST 5% IN WEIGHT, FOLLOWED BY WASHING AND DRYING THE FABRIC.
Claim 2
Dependent Claim
95 words
A PROCESS FOR TREATING A POLYETHYLENE TEREPHTHALATE FABRIC WHICH COMPRISES DEFORMING THE FABRIC BY MEANS OF COMPRESSIVE FORCE APPLIED TO AT LEAST 50% OF THE SURFACE AREA OF THE FABRIC AND DISTRIBUTED UNIFORMLY OVER THE ENTIRE SURFACE ARE OF THE FABRIC AT A TEMPERATURE BETWEEN ABOUT 100*F. AND 450*F., HEAT SETTING THE FABRIC BY SUBJECTING IT TO DRY HEAT AT A TEMPERATURE FROM ABOUT 250*F. TO ABOUT 450*F. AND THEN IMMERSING THE FABRIC IN AN AQUEOUS ALKALINE SOLUTION UNTIL THE FABRIC HAS LOST AT LEST 5% IN WEIGHT, FOLLOWED BY WASHING AND DRYING THE FABRIC.
References Cited (Backward Citations)
US2712170A
Cited
US2781242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |