Patent US3692725A successfully refreshed from Google Patents.
US3692725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized binder for water-flushable non-woven webs
Assignee: Kimberly Clark Corp
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Filing: 1970-10-28
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Granted: 1972-09-19
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Expires: 1990-10-28
Abstract
Abstract A STABILIZED BINDER MIXTURE FOR APPLICATION TO NONWOVEN WEBS TO PROVIDE A WATER-FLUSHABLE WRAPPER FOR ABSORBENT PADS SUCH AS SANITARY NAPKINS, DIAPERS AND THE LIKE. A HIGHLY VISCOUS SOLUTION OF POLYVINYL ALCOHOL CONTAINING REACTIVE CHEMICALS WHICH FORM CROSSLINKING ALKALINE BORATES IN SITU UPON HEATING IS REDUCED TO WORKABLE VISCOSITY BY SATURATING THE SOLUTION WITH CARBON DIOXIDE. ALTERNATIVELY A SOLUTION INITIALLY LOW IN VISCOSITY IS MAINTAINED AT WORKABLE VISCOSITY BY SATURATING THE POLYVUNYL ALCOHOL SOLUTION WITH CO2 BEFORE ADDING THE OTHER CHEMICALS.
Inventors
- 👤 David V Duchane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:49
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/80; D06M11/82; D04; D04H; D04H1/00; D04H1/40; D04H1/58; D04H1/587; D04H1/64; D06M11/68; D06M11/70; D06M11/71; D06M15/00; D06M15/19; D06M15/21; D06M15/327; D06M15/333
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |