Nonwoven fabric comprising discontinuous large holes connected by fiber bundles defining small holes
Abstract
Abstract A NONWOVEN FABRIC HAVING A PLURALITY OF PATTERNS OF APERTURES OR HOLES OR OTHER AREAS OF LOW FIBER DENSITY WHICH ALTERNATE AND EXTEND THROUGHOUT THE FABRIC. ONE OF THE PATTERNS OF AREAS OF LOW FIBER DENSITY IS DEFINED BY YARN-LIKE BUNDLES OF FIBER SEGMENTS AND THE OTHER PATTERN OF AREAS OF LOW FIBER DENSITY IS ALSO DEFINED BY YARN-LIKE BUNDLES OF FIBER SEGMENTS. THE FIRST PATTERN OF AREAS OF LOW FIBER DENSITY IS DISPOSED IN DISCONTINUOUS PORTIONS OF THE FABRIC AND THE SECOND PATTERN OF AREAS OF LOW FIBER DENSITY IS DISPOSED IN CONTINUOUS PORTIONS OF THE FABRIC LYING BETWEEN EACH PAIR OF ADJACENT AREAS OF LOW FIBER DENSITY IN THE FIRST PATTERN. THE AREAS OF LOW FIBER DENSITY IN THE FIRST PATTERN ARE AT LEAST FOUR TIMES LARGER THAN THE AREAS OF LOW FIBER DENSITY IN THE SECOND PATTERN. SOME OF THE YARN-LIKE BUNDLES OF FIBER SEGMENTS IN THE FABRIC ARE OF HEAVIER WEIGHT THAN OTHER SUCH BUNDLES.
Inventors
- 👤 Frank Kalwaites
Bibliographic Details
Claims Analysis
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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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |