US3586565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for the manufacture of cellular and laminated materials
Assignee: Sealed Air Corp
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Filing: 1968-12-04
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Granted: 1971-06-22
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Expires: 1988-12-04
Abstract
Abstract METHOD AND APPARATUS FOR MANUFACTURING LAMINATED AND LAMINATED CELLULAR MATERIALS WHEREIN TOW SHEETS OF HEAT SEALABLE PLASTIC MATERIAL ARE FED DOWNWARDLY BETWEEN RADIANT HEATING DEVICES TO GRADUALLY RAISE THE TEMPERATURE OF THE SHEETS TO SEALING TEMPERATURES, THE SHEETS BEING SUBSTANTIALLY UNSUPPORTED DURING THEIR DOWNWARD TRAVEL WITH THE FINAL TEMPERATURE ATTAINED JUST PRIOR TO THE APPLICATION OF THE SHEETS TO AN EMBOSSING AND/OR LAMINATING ROLLER FOR SEALING THE SHEETS ONE TO THE OTHER AND IN THE CASE WHEREIN ONE SHEET IS EMBOSSED TO FORM A PLURALITY OF DISCRETE HERMETICALLY SEALED CELLS.
Inventors
- 👤 Alfred W Fielding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:48
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29C; B29C51/00; B29C51/18; B29C51/20; B29C51/22; B32; B32B; B32B27/00; Y; Y02; Y02P; Y02P70/00; Y02P70/10; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1025; Y10T156/1039
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |