US2526897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aryl indans
Assignee: Universal Oil Products Co
•
Filing: 1947-11-28
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Granted: 1950-10-24
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Expires: 1967-11-28
Abstract
No abstract record available.
Inventors
- 👤 Vladimir N Ipatieff
- 👤 Pines Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:53
CPC Classifications
C; C07; C07C; C07C13/00; C07C13/28; C07C13/32; C07C13/45; C07C13/465; C07C2/00; C07C2/76; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR PRODUCING AN INDAN HYDROCARBON WHICH COMPRISES REACTING AT HYDROGEN TRANSFER CONDITIONS IN THE PRESENCE OF AN ACID-ACTING CATALYST A BRANCHED-CHAIN OLEFIN-ACTING COMPOUND AND A PARA-DISUBSTITUTED BENZENE HYDROCARBON HAVING AS ONE SUBSTITUENT A SATURATED HYDROCARBON GROUP CONTAINING AT LEAST THREE CARBON ATOMS AND ONLY ONE HYDROGEN ATOM JOINED TO THE CARBON ATOM COMBINED WITH THE BENZENE RING.
Claim 2
Dependent Claim
59 words
A PROCESS FOR PRODUCING AN INDAN HYDROCARBON WHICH COMPRISES REACTING AT HYDROGEN TRANSFER CONDITIONS IN THE PRESENCE OF AN ACID-ACTING CATALYST A BRANCHED-CHAIN OLEFIN-ACTING COMPOUND AND A PARA-DISUBSTITUTED BENZENE HYDROCARBON HAVING AS ONE SUBSTITUENT A SATURATED HYDROCARBON GROUP CONTAINING AT LEAST THREE CARBON ATOMS AND ONLY ONE HYDROGEN ATOM JOINED TO THE CARBON ATOM COMBINED WITH THE BENZENE RING.
References Cited (Backward Citations)
US2328756A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |