US3597306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonwoven fabric formed predominantly of short length cellulose fibers
Assignee: Johnson and Johnson
•
Filing: 1968-02-09
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Granted: 1971-08-03
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Expires: 1988-02-09
Abstract
Abstract THROUGH BONDED NONWOVEN FABRICS ARE DISCLOSED WHICH, BASED ON THE WEIGHT OF FIBROUS MATERIAL, CONSIST OF AT LEAST 80% BY WEIGHT OF CELLULOSIC FIBROUS MATERIAL OF LESS THAN TEXTILE LENGTH. OF THIS SHORT LENGTH CELLULOSIC FIBROUS MATERIAL, AT LEAST 15% AND UP TO 50% BY WEIGHT IS PARTICULATE IN NATURE. THE FABRICS HAVE A MINIMUM WET TENSILE STRENGTH OF 0.61 POUND PER INCH WIDTH, A MINIMUM DRY TENSILE STRENGTH OF 1.35 POUNDS PER INCH WIDTH AND A MAXIMUM STIFFNESS OF 7.0 CM.
Inventors
- 👤 Frederick K Mesek
- 👤 John S Andrews
- 👤 Frank J Fillwalk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/26; D21H5/2607; D21H5/2628; D21H5/2635; D21H11/00; D21H15/00; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/253; Y10T428/27; Y10T442/00; Y10T442/20; Y10T442/2008; Y10T442/2762; Y10T442/277
Claims Analysis
Total Claims: 0
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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) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |