US3794638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting compositions comprising high vinyl butadiene polymer and a free radical initiator
Assignee: BP Chemicals Ltd
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Filing: 1971-07-20
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Granted: 1974-02-26
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Expires: 1991-07-20
Abstract
Abstract THERMOSETTING MOULDING COMPOSITIONS COMPRISING HIIGH VINYL BUTADIENE POLYMER AND, AS FREE RADICAL INITIATOR, 1,3- OR 1,4-BIS (TERTIARYBUTYL) PEROXYISOPROPYL BENZENE ARE DESCRIBED WHICH HAVE IMPROVED DIMENSIONAL STABILITY.
Inventors
- 👤 P Westermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:27
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08K; C08K5/00; C08K5/04; C08K5/14
Claims Analysis
Total Claims: 0
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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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |