US3697368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide-polyethylene composite films
Assignee: Honeywell International Inc
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Filing: 1971-02-26
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Granted: 1972-10-10
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Expires: 1991-02-26
Abstract
Abstract COMPOSITE FILMS ARE PROVIDED BY COEXTRUDING A POLYAMIDE WITH AT LEAST ONE COMBINATION OF POLYMERIC MATERIALS SELECTED FROM THE GROUP OF (1) (A) AN ETHYLENIC ACIDIC POLYMER AND (B) A POLYOLEFINIC HYDROCARBON; OR (2) A MIXTURE OF AN ETHYLENIC ACIDIC POLYMER AND A POLYOLEFINIC HYDROCARBON OR (3) (A) A MIXTURE OF AN ETHYLENIC ACIDIC POLYMER AND A POLYOLEFINIC HYDROCARON AND (B) A POLYOLFINIC HYDROCARBON IN A NOVEL PROCESS WHICH PROVIDES FILMS HAVING AN EXCELLENT BALANCE OF PROPERTIES INCLUDING HIGH STRENGTH, CLARITY AND LOW MOISTURE AND GAS PERMEABILITY.
Inventors
- 👤 Mahendra Bhuta
- 👤 William Sacks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:35
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C48/00; B29C48/16; B29C48/18; B29C48/21; B29C48/25; B29C48/30; B29C48/305; B29C48/307; B29C48/03; B29C48/07; B29C48/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31855; Y10T428/31938
Claims Analysis
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |