US3574046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biaxially oriented polyethylene-1:2-diphenoxyethane-4:4'-dicarboxylate sheets
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1968-04-03
•
Granted: 1971-04-06
•
Expires: 1988-04-03
Abstract
Abstract BALANCED BIAXIALLY ORIENTED AND PREFERABLY HEAT-SET FILMS OF POLYETHYLENE - 1:2-DIPHENOXYETHANE-4:4''-DICARBOXYLATE OF 5 TO 750 GAUGE IN THICKNESS.
Inventors
- 👤 Richard Harold Barclay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:43
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/10; B29C55/12; B29C71/00; B29C71/0063; B29K; B29K2995/00; B29K2995/0003; B29K2995/0007; B29K2995/0012; B29K2995/0017; B29K2995/0037; B29K2995/0055; 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) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |