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US4241007A
Expired / Lapsed
US
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Method of producing water-absorbent solid cloth-like articles
Assignee: SANKEI KOHSA Co Ltd
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Filing: 1979-03-15
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Granted: 1980-12-23
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Expires: 1999-03-15
Abstract
Abstract A method of producing water-absorbent cloth-like articles is disclosed. A binderless cellulosic nonwoven fabric is placed in a mold and compressed under a pressure of 1100 to 1500 kg/cm 2 , preferably 1200 to 1300 kg/cm 2 . The molding so produced will recover to original form when water is added to it.
Inventors
- 👤 Yoshihiko Tanaka
- 👤 Teruhiko Sugimori
- 👤 Hideaki Habara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:48
CPC Classifications
D; D21; D21F; D21F13/00; A; A47; A47K; A47K10/00; A47L; A47L13/00; A47L13/10; A47L13/16; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D21F11/00; D21F11/14; D21F13/10
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
47 words
A method of producing a water-absorbent solid cloth-like article characterized by putting a binderless cellulosic nonwoven fabric into any desired mold and compressing and molding said binderless cellulosic nonwoven fabric under a pressure of 1100 to 1500 kg/cm 2 to give said fabric a water-absorption recovering property.
Claim 2
Independent Claim
47 words
A method of producing a water-absorbent solid cloth-like article characterized by putting a binderless cellulosic nonwoven fabric into any desired mold and compressing and molding said binderless cellulosic nonwoven fabric under a pressure of 1100 to 1500 kg/cm 2 to give said fabric a water-absorption recovering property.
Claim 3
Dependent Claim
17 words
A method in accordance with claim 1, wherein said pressure is 1,200 to 1,300 kg/cm 2 .
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) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |