US Patent No: 6,240,817
Number of patents in Portfolio can not be more than 2000
Method of forming improved apertured films by using fluid perforation
Stats
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Jun 5, 2001
Issued date -
Aug 3, 1998
filing date -
09/128,290
serial no -
In Force
status
Importance
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Abstract
An apertured film for use as a topsheet in absorbent products wherein the film is apertured and includes a plurality of micro-holes and a plurality of large-sized holes. A method of forming the film is disclosed, as well as an absorbent product incorporating the apertured film as a topsheet.
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First Claim
Related Publications
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International Classification(s)
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- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
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| 4,324,246 Disposable absorbent article having a stain resistant topsheet | 251 | 1980 | |
| 4,342,314 Resilient plastic web exhibiting fiber-like properties | 361 | 1980 | |
| 4,695,422 Production of formed material by solid-state formation with a high-pressure liquid stream | 100 | 1984 | |
| 4,609,518 Multi-phase process for debossing and perforating a polymeric web to coincide with the image of one or more three-dimensional forming structures | 196 | 1985 | |
| 4,637,819 Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited and statically contacted fluids from one surface to the other | 93 | 1985 | |
| 4,839,216 Formed material produced by solid-state formation with a high-pressure liquid stream | 91 | 1987 | |
| 4,950,264 Thin, flexible sanitary napkin | 338 | 1989 | |
| 5,009,653 Thin, flexible sanitary napkin | 202 | 1990 | |
| 5,342,334 Coextruded three-dimensional fluid-pervious plastic web | 38 | 1993 | |
| 5,368,910 Macroscopically expanded plastic web having improved fluid drainage | 48 | 1993 | |
| 5,352,217 Absorbent article having multiple topsheets | 34 | 1993 | |
| 5,441,691 Process for microaperaturing and microembossing a polymeric web | 15 | 1993 | |
| 5,665,452 Three-dimensional, macroscopically expanded, apertured laminate webs | 5 | 1994 | |
| 5,792,412 Apertured films having durable wettability and processes for marking them | 4 | 1996 | |
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| 5,112,690 Low hydrohead fibrous porous web with improved retentive wettability | 21 | 1990 | |
| 5,382,703 Electron beam-graftable compound and product from its use | 25 | 1992 | |
| 5,636,558 Method and apparatus for directing fluid | 12 | 1996 | |
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| 4,381,326 Reticulated themoplastic rubber products | 42 | 1981 | |
| 4,690,679 Coextruded apertured film sanitary napkin cover | 106 | 1986 | |
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| 5,382,245 Absorbent articles, especially catamenials, having improved fluid directionality | 77 | 1992 | |
| 5,368,926 Fluid accepting, transporting, and retaining structure | 41 | 1992 | |
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| 4,456,570 Treatment of perforated film | 48 | 1982 | |
| 4,535,020 Perforated film | 70 | 1984 | |
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| 5,376,439 Soft films having enhanced physical properties | 98 | 1994 | |
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| 5,824,352 Apparatus for producing an apertured plastic film having a tricot texture | 20 | 1996 | |
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| 4,867,881 Orientied microporous film | 108 | 1987 | |
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| 5,567,376 Method of forming textile-like apertured plastic films | 45 | 1995 | |
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| 4,351,784 Corona treatment of perforated film | 44 | 1980 | |
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| 5,383,870 Liquid-permeable topsheet for body fluid absorptive goods | 59 | 1993 | |
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| 5,387,290 Hand polishing technique for automobiles and other vehicles | 10 | 1993 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 5, 2012 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |