US3470116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-extinguishing styrene polymer compositions and method of making same
Assignee: Chemische Fabrik Kalk GmbH
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Filing: 1966-01-21
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Granted: 1969-09-30
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Expires: 1986-01-21
Abstract
No abstract record available.
Inventors
- 👤 Hans Eberhard Praetzel
- 👤 Ernst-Friedrich Wirth
- 👤 Herbert Jenkner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0061; C08F; C08F259/00; C08L; C08L25/00; C08L25/02; C08L25/04; C08L25/06; C08J2325/00; C08J2325/02; C08J2325/04; C08J2427/00; C08L2201/00; C08L2201/02; C08L27/00; C08L27/02; C08L27/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2549060A
Cited
US2744291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-29 | 1973-03-31 | 1973-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-29 | 1977-03-31 | 1977-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-29 | 1981-03-31 | 1981-09-30 | $7700.00 | Window Closed / Lapsed |