US3229691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible absorbent sheet
Assignee: Johnson and Johnson
•
Filing: 1963-07-10
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Granted: 1966-01-18
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Expires: 1983-07-10
Abstract
No abstract record available.
Inventors
- 👤 Jr George A Crowe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:11
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/02; A61F13/0203; A61F13/0206; A61F13/0223; A61F2013/00089; A61F2013/00102; A61F2013/00157; A61F2013/00246; A61F2013/00361; A61F2013/00855; A61F13/15; A61F2013/15008; A61F2013/15048; A61F13/51; A61F13/514; A61F13/51401; A61F2013/51441; A61F2013/51447; A61F13/53; A61F2013/530802; A61F13/534; A61F2013/53445; A61F13/539; A61F2013/53966
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A COMPOSITE FLEXIBLE, RESILIENT, AIR-PERVIOUS SHEET HAVING A WATER-ABSORBENT SIDE AND A WTER-NONABSORBENT SIDE AND COMPRISING AHYDROPHOBIC SHEET OF OPEN-CELLULAR SPONGE MATERIAL HAVING ADHERED TO ONE SIDE THEREOF A WEB OF HYDROPHILIC FIBERS, SAID SHEET OF OPEN-CELLULAR SPONGE MATERIAL HAVING A RESISTANCE TO AIR FLOW OFNOTE OVER 0.5 INCH OF WATER HEIGHT AND SAID WEB OF HYDROPHILIC FIBERS BEING ADHERED TO SAID SHEET OF OPEN-CELLULAR SPONGE MATERIAL BY FIBERS FROM SAID FIBER WEB EXTENDING AS INDIVIDUAL FIBER BUNDLES INTO THE MAIN BODY OF SAID SHEET OF CELLULAR SPONGE MATERIAL, THE ENDS OF SAID BUNDLES TERMINATING SHORT OF THE SURFACE OF SAID SPONGE SHEET OPPOSITE TO THE SURFACE CONTAINING SAID FIBER WEB, SAID COMPOSITE SHEET HAVING AN AIR PERMEABILITY OF NOT APPRECIABLY LESS THAN THE AIR PERMEABILITY OF SAID OPEN-CELLULAR SPONGE SHEET.
Claim 2
Dependent Claim
131 words
A COMPOSITE FLEXIBLE, RESILIENT, AIR-PERVIOUS SHEET HAVING A WATER-ABSORBENT SIDE AND A WTER-NONABSORBENT SIDE AND COMPRISING AHYDROPHOBIC SHEET OF OPEN-CELLULAR SPONGE MATERIAL HAVING ADHERED TO ONE SIDE THEREOF A WEB OF HYDROPHILIC FIBERS, SAID SHEET OF OPEN-CELLULAR SPONGE MATERIAL HAVING A RESISTANCE TO AIR FLOW OFNOTE OVER 0.5 INCH OF WATER HEIGHT AND SAID WEB OF HYDROPHILIC FIBERS BEING ADHERED TO SAID SHEET OF OPEN-CELLULAR SPONGE MATERIAL BY FIBERS FROM SAID FIBER WEB EXTENDING AS INDIVIDUAL FIBER BUNDLES INTO THE MAIN BODY OF SAID SHEET OF CELLULAR SPONGE MATERIAL, THE ENDS OF SAID BUNDLES TERMINATING SHORT OF THE SURFACE OF SAID SPONGE SHEET OPPOSITE TO THE SURFACE CONTAINING SAID FIBER WEB, SAID COMPOSITE SHEET HAVING AN AIR PERMEABILITY OF NOT APPRECIABLY LESS THAN THE AIR PERMEABILITY OF SAID OPEN-CELLULAR SPONGE SHEET.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |