US3703430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for fabricating plastic cushioning and insulating material
Assignee: JOSEPH L RICH
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Filing: 1971-03-12
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Granted: 1972-11-21
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Expires: 1991-03-12
Abstract
Abstract Layers of heat sealable sheet material are passed on opposite sides of a blower to axially spaced pairs of rotating rollers which form seams joining the layers while an air filled passage is maintained between each pair of longitudinal seams. The longituninally seams sheet material is passed through a pair of rotating rollers one or both of which have surface recesses forming transverse seams dividing the passages into closed, sealed, expanded, air filled cells.
Inventors
- 👤 Joseph L Rich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:10
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/40; B29C66/41; B29C66/43; B29C66/431; B29C66/4312; B32; B32B; B32B3/00; B32B3/10; B32B3/18; B32B3/20; B29C51/00; B29C51/26; B29C51/266; B29C51/267; B29C65/00; B29C65/02; B29C65/18; B29C65/24; B29C65/30; B29C65/305; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/432; B29C66/4322; B29C66/439; B29C66/80; B29C66/81; B29C66/814; B29C66/8141; B29C66/81433; B29C66/8145; B29C66/81463; B29C66/81469; B29C66/83; B29C66/834; B29C66/8341; B29C66/83411; B29C66/83413; B29C66/8351; B29C66/83511; B29C66/83513; B29C66/84; B29C66/843; B29C66/8432; B31; B31D; B31D5/00; B31D5/0039; B31D5/0073; B32B27/00; B32B27/06; B32B27/08; B32B27/32; B29C49/00; B29C49/02; B29C49/06905; B29C49/0691; B29C66/70; B29C66/71; B29L; B29L2022/00; B29L2022/02; B29L2031/00; B29L2031/712; B29L2031/7138; B31D2205/00; B31D2205/0005; B31D2205/0011; B31D2205/0017; B31D2205/0023; B32B2323/00; B32B2323/04; B32B2553/00; B32B2553/02; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1712; Y10T156/1737
Claims Analysis
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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) | 1975-11-21 | 1976-05-22 | 1976-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-21 | 1980-05-22 | 1980-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-21 | 1984-05-22 | 1984-11-21 | $7700.00 | Window Closed / Lapsed |