Patent US3677858A successfully refreshed from Google Patents.
US3677858A
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High temperature and pressure bonding of urethane foam
Assignee: Kimberly Clark Corp
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Filing: 1970-04-27
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Granted: 1972-07-18
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Expires: 1990-04-27
Abstract
Abstract THE SURFACE CHARACTERISTICS OF A POLYURETHANE FOAM ARE MODIFIED BY LAMINATING THE FOAM TO A CELLULOSIC WEB. LAMINATION IS ACCOMPLISHED BY PLACING THE CELLULOSIC WEB IN CONTACT WITH THE FOAM AND THEREAFTER BONDING THE WEB-FOAM STRUCTURE AT INTERMITTENT POINTS BY THE APPLICATION OF HEAT AND PRESSURE IN PARTICULAR AMOUNTS.
Inventors
- 👤 Robert C Sokolowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:32
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/42; A61L15/425; B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B29; B29C; B29C65/00; B29C65/02; B29C65/18; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/20; B29C66/21; B29C66/40; B29C66/41; B29C66/43; B29C66/436; B29C66/70; B29C66/71; B29C66/712; B29C66/72; B29C66/727; C; C08; C08J; C08J5/00; C08J5/12; C08J5/121; B29K; B29K2001/00; B29K2105/00; B29K2105/04; B29L; B29L2009/00; B32B2262/00; B32B2262/06; B32B2262/062; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2309/00; B32B2309/02; B32B2309/022; B32B2432/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1039; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/249966
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) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |