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US3546160A
Expired / Lapsed
US
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Self-extinguishing styrene/acrylonitrile-copolymers
Assignee: Knapsack AG
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Filing: 1968-05-31
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Granted: 1970-12-08
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Expires: 1988-05-31
Abstract
No abstract record available.
Inventors
- 👤 Franz-Josef Dany
- 👤 Joachim Kandler
- 👤 Klaus Frank
- 👤 Hans Weiden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:04
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2673193A
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US2964083A
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US2964490A
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US3326832A
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US3322716A
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US3269963A
Cited
US3294712A
Cited
US3373135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-07 | 1974-06-08 | 1974-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-07 | 1978-06-08 | 1978-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-07 | 1982-06-08 | 1982-12-08 | $7700.00 | Window Closed / Lapsed |