US2963524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making 1, 3, 5-hexatriene
Assignee: Beazer East Inc
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Filing: 1959-02-16
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Granted: 1960-12-06
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Expires: 1979-02-16
Abstract
No abstract record available.
Inventors
- 👤 James M Shackelford
- 👤 Louis H Schwartzman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:05
CPC Classifications
C; C07; C07C; C07C1/00; C07C1/20; C07C1/24; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2521/08; C07C2521/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
METHOD OF MAKING 1,3-5-HEXATRIENE COMPRISING CONTACTING 1,4-HEXADIENE-3-OL WITH A DEHYDRATION CATALYST COMPRISING A MAJOR PORTION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA AND ALUMINA HAVING A SURFACE AREA OF ABOUT 50-150 SQUARE METERS PER GRAM AT A TEMPERATURE OF ABOUT 225-350*C. AND AT A PRESSURE OF ABOUT 1-760 MM. OF MERCURY FOR NOT MORE THAN ABOUT 4 SECONDS.
Claim 2
Dependent Claim
61 words
METHOD OF MAKING 1,3-5-HEXATRIENE COMPRISING CONTACTING 1,4-HEXADIENE-3-OL WITH A DEHYDRATION CATALYST COMPRISING A MAJOR PORTION OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA AND ALUMINA HAVING A SURFACE AREA OF ABOUT 50-150 SQUARE METERS PER GRAM AT A TEMPERATURE OF ABOUT 225-350*C. AND AT A PRESSURE OF ABOUT 1-760 MM. OF MERCURY FOR NOT MORE THAN ABOUT 4 SECONDS.
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) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |