US2734093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Isomerization of decalin
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
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Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:16
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/29
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
PROCESS OF PRODUCING ISODECALINS WHICH COMPRISES FORMING A LIQUID PHASE REACTION MIXTURE CONSISTING ESSENTIALLY OF DECALIN, AN ISOPARAFFIN, HYDROGEN FLUORIDE AND BORON TRIFLUORIDE, HEATING SAID REACTION MIXTURE TO A TEMPERATURE OF FROM 125* C. TO 250* C. TO CONVERT A SUBSTANTIAL PORTION OF SAID DECALIN TO ISODECALINS HAVING A BOILING RANGE BELOW THAT OF SAID DECALIN, SEPARATING SAID ISODECALINS FROM THE REACTION MIXTURE AND SUBSTANTIALLY QUANTITATIVELY RECOVERING SAID ISOPARAFFIN FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
73 words
PROCESS OF PRODUCING ISODECALINS WHICH COMPRISES FORMING A LIQUID PHASE REACTION MIXTURE CONSISTING ESSENTIALLY OF DECALIN, AN ISOPARAFFIN, HYDROGEN FLUORIDE AND BORON TRIFLUORIDE, HEATING SAID REACTION MIXTURE TO A TEMPERATURE OF FROM 125* C. TO 250* C. TO CONVERT A SUBSTANTIAL PORTION OF SAID DECALIN TO ISODECALINS HAVING A BOILING RANGE BELOW THAT OF SAID DECALIN, SEPARATING SAID ISODECALINS FROM THE REACTION MIXTURE AND SUBSTANTIALLY QUANTITATIVELY RECOVERING SAID ISOPARAFFIN FROM THE REACTION MIXTURE.
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) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |