US3825644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing multilaminate film
Assignee: Fort James Corp
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Filing: 1972-01-27
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Granted: 1974-07-23
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Expires: 1992-01-27
Abstract
Abstract IG-01 A PROCESS FOR PRODUCING MULTILAMINATE FILM BY FORMING A COMPOSITE RESIN PLUG, LATERALLY EXPANDING THECOMPOSITE RESIN PLUG WIDTHWISE SO AS TO PRODUCE A LATERALLY EXPANDED MOLTEN PLASTIC RESIN STREAM SUBSTANTIALLY EQUAL IN WIDTH TO THAT OF A MULTILAMINATE, THERMOPLASTIC EQUAL WHICH IS TO BE EXTURDED THROUGH A LONG, NARROW ORIGICE OF A DIE, AND LAMINARLY FLOWING THEEXPANDED MOLTEN PLASTIC RESIN LAMINATE TO THE LONG, NARROW ORIFICE AND MEANWHILE COMPRESSIONALY CONVERGENTLY REDUCING THE LATERALLY EXPANDED PLASTIC RESIN STREAM IN THICKNESS TO THE LONG NARROW ORIFICE AND EXTRUDING THE THERMOPLASTIC FILM THROUGH THE LONG, NARROW ORIFICE.
Inventors
- 👤 E Tonn
- 👤 J Hoagland
- 👤 G Tokos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:23
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/305; B29C48/307; B32; B32B; B32B23/00; B32B23/04; B32B23/08; B32B27/00; B32B27/06; B32B27/08; B32B27/30; B32B27/306; B32B27/32; B32B2323/00; B32B2323/04; B32B2323/046; B32B2323/10
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |