US3595736A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Uniaxially oriented films and tapes
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1967-04-27
•
Granted: 1971-07-27
•
Expires: 1987-04-27
Abstract
Abstract UNIAXIALLY DRAWN FILMS AND TAPES OF POLYETHYLENE-1-2DIPHENOXY-4:4''-DICARBOXYLATE HAVING IN THE DIRECTION OF DRAWING TENSILE STRENGTH OF AT LEAST 20,000 P.S.I. AND MODULI OF AT LEAST 0.8X10**6 P.S.I. AND PROCESSES FOR THEIR PRODUCTION. THE FILMS AND TAPES ARE USEFUL IN MANY APPLICATIONS, PARTICULARLY AS A MAGNETIC RECORDING TAPE BASE.
Inventors
- 👤 Richard Harold Barclay Buteux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:44
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/005; B29C55/02; B29C55/04; B29C55/06; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; H01B3/422; H01B3/423; B29K; B29K2067/00; Y; Y10; Y10S; Y10S428/00; Y10S428/91
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |