US3707430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Selectively dispersible sanitary structures
Assignee: Celanese Corp
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Filing: 1970-06-12
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Granted: 1972-12-26
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Expires: 1990-06-12
Abstract
Abstract TOILET-FLUSHABLE SANITARY PRODUCTS CAPABLE OF ABSORBING BODY-DISCHARGE SUCH AS DIAPERS AND SANITARY NAPKINS ARE DISCLOSED WHICH HAVE EXCELLENT DRY AND WET STRENGTH AND WHICH COMPRISE A SCRIM OR PAPER OF BIODEGRADABLE FIBERS SUCH AS CELLULOSIC FIBERS, AND PADDING OF WATER-DISPERSIBLE ABSORBENT MATERIAL. THE STRUCTURES HAVE A SERIES OF CHANNELS CONTAINING A SELECTIVELY SOLUBLE RESIN WHICH BONDS THE STAPLE FIBERS TO EACH OTHER AND TO THE ABSORBENT MATERIAL AND POSSESSES CERTAIN CRITICAL CHARACTERISTICS INCLUDING THE FACT THAT IT IS STABLE TO BODY-DISCHARGE BUT CAPABLE OF BEING DEGRADED IN A TOILET SYSTEM UPON THE ADDITION OF A SUITABLE SUBSTANCE. D R A W I N G
Inventors
- 👤 John R Costanza
- 👤 Bruce M Eisen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:21
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/26; A; A61; A61F; A61F13/00; A61F13/15; A61F13/15203; A61F13/15211; A61F13/15577; A61F13/15707; A61F13/15731; A61F13/53; A61F13/531; A61F13/532; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/62; B32B27/00; B32B27/12; B32B3/00; B32B3/26; B32B3/30; B32B2262/00; B32B2262/04; B32B2262/06; B32B2262/062; B32B2307/00; B32B2307/70; B32B2307/716; B32B2307/7163; B32B2307/7166; B32B2307/724; B32B2307/7242; B32B2307/7246; B32B2555/00; B32B2555/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/2457; Y10T428/24587; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/29; Y10T428/2904; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965
Claims Analysis
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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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |