US3383445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of biaxially stretched polyethylene films
Assignee: Kalle GmbH and Co KG
•
Filing: 1964-12-16
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Granted: 1968-05-14
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Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Gebler Horst
- 👤 Ludwig E H Klenk
- 👤 Walter F Seifried
- 👤 Richard Kurt
- 👤 Muller Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:42
CPC Classifications
B; B29; B29C; B29C55/00; B29C55/02; B29C55/023; B29C48/00; B29C48/001; B29C48/0018; B29C48/0019; B29C48/03; B29C48/09; B29C48/10; B29L; B29L2023/00; B29L2023/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA670551A
Cited
US2412187A
Cited
US2461975A
Cited
FR1024619A
Cited
US3177277A
Cited
FR1274521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |