US3799828A
Expired / Lapsed
US
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Synthetic papers and the method of making the same
Assignee: Mitsubishi Chemical Corp
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Filing: 1971-08-12
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Granted: 1974-03-26
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Expires: 1991-08-12
Abstract
Abstract A SYNTHETIC PAPER OF A LAMINATED STRUCTURE CONSISTS OF A BASE LAYER MADE OF A BIAXIALLY ORIENTED PLASTIC FLIM CONTAINING 0-20% BY WEIGHT OF A FINE INORGANIC FILLER AND AT LEAST ONE PAPER-LIKE LAYER MADE OF A UNIAXIALLY ORIENTED PLASTIC FILM CONTAINING 0.5-65% BY WEIGHT OF A FINE INORGANIC FILLER. THIS SYNTHETIC PAPER IS MADE BY LAMINATING THE PAPER-LIKE LAYER IN NON-ORIENTED STATE ON THE BASE LAYER WHICH HAS BEEN PREVIOUSLY SUBJECTED TO UNIAXIAL DRAWING IN ITS LONGITUDINAL DIRECTION TO OBTAIN A COMPOSITE LAMINATED STRUCTURE, AND FURTHER DRAWING THE COMPOSITE STRUCTURE THUS OBTAINED IN ITS TRANSVERSE DIRECTION.
Inventors
- 👤 M Takashi
- 👤 M Yoshiyasu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:10
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B7/00; B32B7/03; B32B27/32; B32B37/00; B32B37/08; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/518; B32B2323/00; B32B2323/10; Y; Y10; Y10S; Y10S264/00; Y10S264/47
Claims Analysis
Total Claims: 0
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |