US2910520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing 2, 5-dimethyl-2, 4-hexadiene
Assignee: Union Carbide Corp
•
Filing: 1957-02-20
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Granted: 1959-10-27
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Expires: 1977-02-20
Abstract
No abstract record available.
Inventors
- 👤 Howard R Guest
- 👤 Ben W Kiff
- 👤 Jr Harry A Stansbury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:19
CPC Classifications
C; C07; C07D; C07D309/00; C07D309/16; C07D309/20; C07D309/22; C07D309/26; C07C; C07C1/00; C07C1/20; C07C1/207; C07C1/213; C07C67/00; C07C67/24; C07C67/28; C07C67/283; C07C67/297; C07C2527/00; C07C2527/14; C07C2527/16; C07C2527/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
IN A PROCESS FOR PREPARING AN INTERMEDIATE USEFUL IN THE PRODUCTION OF ALLETHRIN, THE STEP WHICH COMPRISES HEATING 1,6-DIACETOXY-2,5-DIAMETHYLHEXANE IN THE PRESENCE OF ALUMINUM PHOSPHATE AS CATALYST TO CAUSE THE FORMATION OF 2,5-DIMETHYL-2,4-HEXADIENE.
Claim 2
Dependent Claim
33 words
IN A PROCESS FOR PREPARING AN INTERMEDIATE USEFUL IN THE PRODUCTION OF ALLETHRIN, THE STEP WHICH COMPRISES HEATING 1,6-DIACETOXY-2,5-DIAMETHYLHEXANE IN THE PRESENCE OF ALUMINUM PHOSPHATE AS CATALYST TO CAUSE THE FORMATION OF 2,5-DIMETHYL-2,4-HEXADIENE.
References Cited (Backward Citations)
FR451827A
Cited
US2097493A
Cited
US2224912A
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US2204157A
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US2527120A
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US2345113A
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US2251983A
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US2412762A
Cited
US2391509A
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US2479283A
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US2692892A
Cited
US2715649A
Cited
US2774771A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |