US3535251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Acrylonitrile polymers plasticized with phenolic esters of alkyl sulphonic acids
Assignee: Bayer AG
•
Filing: 1966-09-02
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Granted: 1970-10-20
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Expires: 1986-09-02
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm Brenschede
- 👤 Herbert Marzolph
- 👤 Alfred Nogaj
- 👤 Helmut Reichardt
- 👤 Alfred Reichle
- 👤 Martin Wandel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:39
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; C08K5/36; C08K5/41; C08K5/42; C08L; C08L33/00; C08L33/18; C08L33/20; C08L67/00; C08L67/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2426728A
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US2474350A
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US2555062A
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US2503245A
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US2559172A
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US2613195A
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US2689862A
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US3053789A
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US3328365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |