Patent US3457218A successfully refreshed from Google Patents.
US3457218A
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US
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Cis-polybutadiene stabilized with an epoxide
Assignee: Bayer AG
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Filing: 1966-01-12
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Granted: 1969-07-22
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Expires: 1986-01-12
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Haas
- 👤 Kurt Vohwinkel
- 👤 Karl Nutzel
- 👤 Hubert Sutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:19
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08K5/16; C08K5/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2912407A
Cited
US3068197A
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US3287301A
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US3144422A
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US3240841A
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US3392142A
Cited
US3361691A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |