US3660342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 1 3-dienes
Assignee: Monsanto Co
•
Filing: 1970-12-22
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Granted: 1972-05-02
•
Expires: 1990-12-22
Abstract
Abstract THE INVENTION RELATES TO THE PREPARATION OF 1-VINYLCYCLOHEXENE AND OTHER 1,3-DIENES BY AN ISOMERIZATION AND PYROLYSIS PROCESS.
Inventors
- 👤 John C Duggan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:50
CPC Classifications
C; C07; C07C; C07C403/00; C07C403/02; C07C13/00; C07C13/02; C07C13/16; C07C13/20; C07C4/00; C07C5/00; C07C5/22; C07C5/23; C07C5/25; C07C5/2506; C07C5/27; C07C5/31; C07C2601/00; C07C2601/12; C07C2601/16
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) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |