Patent US4307143A successfully refreshed from Google Patents.
US4307143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microfiber oil and water pipe
Assignee: Kimberly Clark Worldwide Inc
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Filing: 1980-07-21
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Granted: 1981-12-22
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Expires: 2000-07-21
Abstract
Abstract Low cost wiper material for industrial and other applications having improved water and oil wiping properties. A base material of meltblown synthetic, thermoplastic microfibers is treated with a wetting agent and may be pattern bonded in a configuration to provide strength and abrasion resistance properties while promoting high absorbency for both water and oil. The wiper of the invention displays a remarkable and unexpected ability to wipe surfaces clean of both oil and water residues without streaking. It may be produced in a continuous process at a low cost consistent with the convenience of single use disposability.
Inventors
- 👤 Gary H. Meitner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:20
CPC Classifications
A; A47; A47L; A47L13/00; A47L13/10; A47L13/16; A47L13/17; D; D04; D04H; D04H1/00; D04H1/40; D04H1/42; D04H1/4282; D04H1/4291; D04H1/4382; D04H1/43838; Y; Y10; Y10S; Y10S428/00; Y10S428/903; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24595; Y10T428/24603; Y10T428/24802; Y10T428/24826; Y10T442/00; Y10T442/60; Y10T442/68
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
A wiper that is both oil and water absorbent and having a reduced tendency to leave streaks and spots consisting essentially of a melt blown polypropylene web having a basis weight in the range of from about 1.5 to 3.5 oz. per square yard and containing about 0.1 to 0.6% by weight of a wetting agent selected from the group consisting of dioctylester of sodium sulfosuccinic acid and isooctyl phenylpolyethoxy ethanol and formed from fibers having an average diameter in the range of up to 10 microns, said wiper having been embossed under conditions of at least 20 psi pressure at a temperature in the range of 180° F. to 245° F.
Claim 2
Dependent Claim
112 words
A wiper that is both oil and water absorbent and having a reduced tendency to leave streaks and spots consisting essentially of a melt blown polypropylene web having a basis weight in the range of from about 1.5 to 3.5 oz. per square yard and containing about 0.1 to 0.6% by weight of a wetting agent selected from the group consisting of dioctylester of sodium sulfosuccinic acid and isooctyl phenylpolyethoxy ethanol and formed from fibers having an average diameter in the range of up to 10 microns, said wiper having been embossed under conditions of at least 20 psi pressure at a temperature in the range of 180° F. to 245° F.
Claim 3
Dependent Claim
42 words
The wiper of claim 1 wherein said web is pattern bonded with a bond density in the range of from about 50 to 225 pins per square inch and a bond area coverage in the range of from about 5 to 25%.
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) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |