US3259539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of a conformable nonwoven web
Assignee: EIDP Inc
•
Filing: 1963-10-28
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Granted: 1966-07-05
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Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 Katz Manfred
- 👤 Makansi Munzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:38
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/12; D21H5/20; D04; D04H; D04H3/00; D04H3/08; D04H3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A PROCESS FOR PREPARING A NONWOVEN FABRIC WHICH COMPRISES (A) FORMING A NONWOVEN WEB OF SYNTHETIC ORGANIC FIBERS AND A SYNTHETIC ORGANIC POLYMER BINDER, THE FIBERS BEING CAPABLE OF ENLONGATING SPONTANEOUSLY AT LEAST 3% UPON BEING HEATED AT A TEMPERATURE 30* C. ABOVE THE FIBER POLYMER SECOND ORDER TRANSITION TEMPERATURE FOR FIVE MINUTES, THE BINDER HAVING AN INITIL MODULUS OF BETWEEN 0.002 AND ABOUT 25 GRAMS PER DENIER, AND (B) HEATING THE WEB AT A TEMPERATURE SUFFICIENT TO FUSE THE BINDER AND ALSO ENLONGATE THE FIBERS AT LEAST 3% WHILE RESTRAINING THE FRIBERIC FROM INCREASING MORE THAN 3% IN LINEAR GROWTH ALONG THE SURFACE OF THE FABRIC.
Claim 2
Dependent Claim
107 words
A PROCESS FOR PREPARING A NONWOVEN FABRIC WHICH COMPRISES (A) FORMING A NONWOVEN WEB OF SYNTHETIC ORGANIC FIBERS AND A SYNTHETIC ORGANIC POLYMER BINDER, THE FIBERS BEING CAPABLE OF ENLONGATING SPONTANEOUSLY AT LEAST 3% UPON BEING HEATED AT A TEMPERATURE 30* C. ABOVE THE FIBER POLYMER SECOND ORDER TRANSITION TEMPERATURE FOR FIVE MINUTES, THE BINDER HAVING AN INITIL MODULUS OF BETWEEN 0.002 AND ABOUT 25 GRAMS PER DENIER, AND (B) HEATING THE WEB AT A TEMPERATURE SUFFICIENT TO FUSE THE BINDER AND ALSO ENLONGATE THE FIBERS AT LEAST 3% WHILE RESTRAINING THE FRIBERIC FROM INCREASING MORE THAN 3% IN LINEAR GROWTH ALONG THE SURFACE OF THE FABRIC.
References Cited (Backward Citations)
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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) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |