Patent US3746609A successfully refreshed from Google Patents.
US3746609A
Expired / Lapsed
US
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Laminate of sma copolymer and polyamide
Assignee: BASF SE
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Filing: 1971-10-04
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Granted: 1973-07-17
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Expires: 1991-10-04
Abstract
Abstract LAMINATES OF A STYRENE POLYMER A AND A POLYAMIDE B, THE STYRENE POLYMER A BEING A COPOLYMER OF STYRENE AND THE ANHYDRIDE OF AN ETHYLENICALLY UNSATURATED DICARBOXYLIC ACID WHICH MAY IF DESIRED HAVE BEEN MODIFIED WITH A BUTADIENE OR ACRYLIC ESTER POLYMER. THE LAMINATES ARE SUITABLE FOR THE PRODUCTION OF FILM AND SHEETING, FOR EXAMPLE PACKAGING FILM.
Inventors
- 👤 K Stange
- 👤 U Koenig
- 👤 H Jenne
- 👤 H Weiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:14
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/34; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2377/00; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746
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) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |