US3659000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of longitudinally oriented thermoplastic film
Assignee: Honeywell International Inc
•
Filing: 1969-07-31
•
Granted: 1972-04-25
•
Expires: 1989-07-31
Abstract
Abstract BLOWN THERMOPLASTIC TUBULAR FILM IS COLLASPED TO A TWOPLY LAYFLAT WHICH IS STRETCHED IN THE MACHINE DIRECTION TO PROVIDE ORIENTED SHRINK FILM. DURING STRETCHING. THE TWOPLY LAYFLAT IS HEATED SUFFICIENTLY TO HEAT SET THE FINISHED PRODUCT, THEREBY FUSING THE TWO PLIES INTO AN INSEPARABLE LAMINATE AND ELIMINATING THE NEED FOR A SPEARATE ANNEALING STEP TO RENDER THE PRODUCT DIMENSIONALLY STABLE AT AMBIENT TEMPERATURE.
Inventors
- 👤 Harold C Cronk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:37
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/28; B29C48/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/03; B29C48/09; B29C48/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-04-25 | 1975-10-25 | 1976-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-25 | 1979-10-25 | 1980-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-25 | 1983-10-25 | 1984-04-25 | $7700.00 | Window Closed / Lapsed |