US2836629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of preparation of cyclohexadienes
Assignee: Individual
•
Filing: 1955-03-10
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Granted: 1958-05-27
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Expires: 1975-03-10
Abstract
No abstract record available.
Inventors
- 👤 Viola Alfred
- 👤 Fleischacker Herman
- 👤 Woods Gilbert Forrest
- 👤 Bolgiano Nicholas Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:34
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/31; C07C2521/00; C07C2521/18; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/44; C07C2601/00; C07C2601/12; C07C2601/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
THE METHOD OF PREPARATION OF CYCLOHEXADIENE COMPRISING CYCLIZING A CONJUGATED TRIENE SELECTED FROM THE GROUP CONSISTING OF HEXATRIENE AND HYDROCARBON SUBSTITUTED HEXATRIENES AT A TEMPERATURE IN EXCESS OF 300* C. IN THE VAPOR PHASE.
Claim 2
Independent Claim
34 words
THE METHOD OF PREPARATION OF CYCLOHEXADIENE COMPRISING CYCLIZING A CONJUGATED TRIENE SELECTED FROM THE GROUP CONSISTING OF HEXATRIENE AND HYDROCARBON SUBSTITUTED HEXATRIENES AT A TEMPERATURE IN EXCESS OF 300* C. IN THE VAPOR PHASE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-26 | 1961-11-25 | 1962-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-26 | 1965-11-25 | 1966-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-26 | 1969-11-25 | 1970-05-27 | $7700.00 | Window Closed / Lapsed |