US2736753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of phenols
Assignee: Hercules Powder Co
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Filing: 1953-09-09
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Granted: 1956-02-28
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Expires: 1973-09-09
Abstract
No abstract record available.
Inventors
- 👤 Jacobs David Ian Hutchinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:31
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN THE PROCESS FOR THE PRODUCTION OF RESORCINOL BY CATALYTIC CLEAVAGE OF A REACTION MIXTURE CONTAINING M-DIISOPROPYLBENZENE DIHYDROPEROXIDE WHEREIN RESORCINOL AND A HIGHER BOILING RESIDUE ARE PRODUCED, THE IMPROVEMENT WHICH COMPRISES DECOMPOSING SAID RESIDUE BY HEATING AT A TEMPERATURE IN THE RANGE OF 200* -400*C. AND RECOVING RESORCINOL AND M-ISOPROPENYL PHENOL AS DECOMPOSITION PRODUCTS.
Claim 2
Dependent Claim
54 words
IN THE PROCESS FOR THE PRODUCTION OF RESORCINOL BY CATALYTIC CLEAVAGE OF A REACTION MIXTURE CONTAINING M-DIISOPROPYLBENZENE DIHYDROPEROXIDE WHEREIN RESORCINOL AND A HIGHER BOILING RESIDUE ARE PRODUCED, THE IMPROVEMENT WHICH COMPRISES DECOMPOSING SAID RESIDUE BY HEATING AT A TEMPERATURE IN THE RANGE OF 200* -400*C. AND RECOVING RESORCINOL AND M-ISOPROPENYL PHENOL AS DECOMPOSITION PRODUCTS.
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) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |