Patent US3733234A successfully refreshed from Google Patents.
US3733234A
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US
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Method for forming an airlaid web
Assignee: Kimberly Clark Corp
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Filing: 1971-05-20
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Granted: 1973-05-15
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Expires: 1991-05-20
Abstract
Abstract FIBER ZONES WITH ZONES OF SUBSTANTIALLY UNBONDED FIBERS THEREBETWEEN. A METHOD FOR FORMING LIGHWEIGHT CELLULOSIC WEBS USEFUL FOR TISSUE AND TOWELING APPLICATIONS COMPRISES AIR LAYING A CONTINUUM OF WOOD FIBERS ON A FORAMINOUS CARRIER, MOISTURIZING THE WOOD FIBER CONTINUUM AND BONDING THE CONTINUUM WITH A PAIR OF ROLLS, AT LEAST ONE HAVING A SERIES OF LAND AREAS THEREON, THE ROLLS FORMING A NIP THROUGH WHICH THE CONTINUUM IS PASSED AND ADAPTED TO COMPRESS THE CONTINUUM INTO A PATTERN OF THIN, LOCALIZED BONDED
Inventors
- 👤 C Dunning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:11
CPC Classifications
D; D21; D21H; D21H5/00; D21H5/26; D21H5/265; D21H5/2657; D21H5/2671; D21H25/00; D21H27/00; D21H27/02; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1023
Claims Analysis
Total Claims: 0
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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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |