US4755413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apertured film facing and method of making the same
Assignee: JPMorgan Chase Bank NA
•
Filing: 1986-05-22
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Granted: 1988-07-05
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Expires: 2006-05-22
Abstract
Abstract An apertured plastic film facing material and method for making the same, together with an improved absorbent product formed therefrom, wherein the edge of the apertures is coated with a hydrophilic material.
Inventors
- 👤 Ronald R. Morris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:36
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/15; A61F13/51; A61F13/511; A61F13/512; A61F13/513; A61F13/51305; A61F13/15577; A61F2013/15821; A61F2013/51059; A61F2013/51061; A61F2013/51355; A61F2013/51372; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
33 words
An apertured film facing material comprising a thin flexible hydrophobic plastic film having apertures therein, the edge of said apertures being coated with a hydrophilic material to promote fluid transfer through the apertures.
Claim 2
Dependent Claim
33 words
An apertured film facing material comprising a thin flexible hydrophobic plastic film having apertures therein, the edge of said apertures being coated with a hydrophilic material to promote fluid transfer through the apertures.
Claim 3
Dependent Claim
25 words
The apertured film facing material of claim 1 wherein the distance between the apertures is greater than about 20% of the diameter of the apertures.
Claim 4
Dependent Claim
22 words
An apertured film facing material as in claim 2 wherein said apertures have an equivalent hydraulic diameter of 0.025" inches or more.
Claim 5
Dependent Claim
22 words
An apertured film facing material as in claim 1 wherein said hydrophilic material is polyvinyl alcohol, glycerine, grain, gum, or hydroxyethyl cellulose.
Claim 6
Dependent Claim
19 words
The apertured film facing material of claim 1 wherein said film has a thickness of 0.5 to 1.5 mils.
Claim 7
Dependent Claim
18 words
The apertured film facing material of claim 1 wherein said film is 1 mil low density polyethylene film.
References Cited (Backward Citations)
US1978620A
Cited
US4617326A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |