Patent US3802098A successfully refreshed from Google Patents.
US3756884A
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W closed cells process and apparatus for producing laminanted structure having hollo
Assignee: Mitsui Chemicals Inc
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Filing: 1971-12-21
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Granted: 1973-09-04
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Expires: 1991-12-21
Abstract
Abstract Improved process for producing a laminated structure having hollow closed cells and an apparatus therefor, characterized in that a molding rotary roll is loosely fitted to a hollow support roll provided in the inside thereof, and the molding roll is intimately contacted with the support roll at the position of a pressure-reduction chamber by a balancing roll, which cooperates with a bonding roll, and thus molding member can be readily exchanged.
Inventors
- 👤 S Hagino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:49
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C43/00; B29C43/22; B29C43/30; B29C43/305; B29C48/00; B29C48/001; B29C48/0013; B29C48/0014; B29C48/16; B29C48/18; B29C48/21; B29C51/00; B29C51/18; B29C51/20; B29C51/22; B29C51/225; B32B3/00; B32B3/10; B32B3/18; B32B3/20; B29C48/0012; B29C48/03; B29C48/07; B29C48/08; B29C48/13; B29K; B29K2105/00; B29K2105/04; B32B2307/00; B32B2307/70; B32B2307/724; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T428/00; Y10T428/24; Y10T428/24628; Y10T428/24661
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |