Patent US3838692A successfully refreshed from Google Patents.
US3838692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrophobic sheet with hydrophilic passages
Assignee: Johnson and Johnson
•
Filing: 1972-11-27
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Granted: 1974-10-01
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Expires: 1992-11-27
Abstract
Abstract Sheet material, suitable for use as a diaper liner or the like, which is of a generally hydrophobic nature but includes hydrophilic passages in the product to permit liquid to be transmitted through the product.
Inventors
- 👤 Y Levesque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:51
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/513; A61F13/51305
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A DISPOSABLE, LIQUID PERMEABLE, DIAPER LINER PRODUCT COMPRISING A LENGTH OF A NONWOVEN FABRIC HAVING OPPOSED MAJOR SURFACES, SAD NONWOVEN FABRIC HAVING A SUFFICIENTLY FINE POROSITY TO PREVENT THE PASSAGE OF PARTICULATE MATTER THERETHROUGH, A MAJOR PROPORTION OF AT LEAST ONE SURFACE OF SAID FABRIC BEING OF A HYDROPHOBIC NATURE AND THE MINOR PROPORTION OF SAID ONE SURFACE BEING OF A HYDROPHILIC NATURE, SAID PROPORTION OF SAID FABRIC OF A HYDROPHILIC NATURE COMPRISING DISCRETE, SPACED APART HYDROPHILIC AREAS SAID AREAS EXTENDING BETWEEN SAID OPPOSED SURFACES OF THE NONWOVEN FABRIC.
Claim 2
Dependent Claim
89 words
A DISPOSABLE, LIQUID PERMEABLE, DIAPER LINER PRODUCT COMPRISING A LENGTH OF A NONWOVEN FABRIC HAVING OPPOSED MAJOR SURFACES, SAD NONWOVEN FABRIC HAVING A SUFFICIENTLY FINE POROSITY TO PREVENT THE PASSAGE OF PARTICULATE MATTER THERETHROUGH, A MAJOR PROPORTION OF AT LEAST ONE SURFACE OF SAID FABRIC BEING OF A HYDROPHOBIC NATURE AND THE MINOR PROPORTION OF SAID ONE SURFACE BEING OF A HYDROPHILIC NATURE, SAID PROPORTION OF SAID FABRIC OF A HYDROPHILIC NATURE COMPRISING DISCRETE, SPACED APART HYDROPHILIC AREAS SAID AREAS EXTENDING BETWEEN SAID OPPOSED SURFACES OF THE NONWOVEN FABRIC.
Claim 3
Dependent Claim
26 words
The product of claim 1 wherein said product is incorporated as part of a further structure with said product forming the outer layer of said structure.
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) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |