US2671815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of diarylalkanes
Assignee: Universal Oil Products Co
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Filing: 1950-06-21
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Granted: 1954-03-09
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Expires: 1970-06-21
Abstract
No abstract record available.
Inventors
- 👤 Pines Herman
- 👤 Vladimir N Ipatieff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:27
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR PRODUCING AN UNSYMMERTRICAL DIARYLALKANE HYDROCARBON WHICH COMPRISES REACTING AT HYDROGEN TRANSFER CONDITIONS IN THE PRESENCE OF AN ACID-ACTING CATALYST AN ALKYLCYCLOOLEFIN, AN AROMATIC HYDROCARBON HAVING TWO SATURATED HYDROCARBON RADICAL SUBSTITUENTS IN PARA POSITIONS TO EACH OTHER AND IN WHICH ONE OF THESE HYDROCARBON RADICAL SUBSTITUENTS HAS AT LEAST ONE AND NOT MORE THAN TWO HYDROGEN ATOMS COMBINED WITH THE CARBON ATOM THAT IS JOINED TO THE AROMATIC RING, AND AN AROMATIC HYDROCARBON HAVING NOT MORE THAN ONE STAURATED HYDROCARBON GROUP BOUND TO THE AROMATIC RING.
Claim 2
Dependent Claim
88 words
A PROCESS FOR PRODUCING AN UNSYMMERTRICAL DIARYLALKANE HYDROCARBON WHICH COMPRISES REACTING AT HYDROGEN TRANSFER CONDITIONS IN THE PRESENCE OF AN ACID-ACTING CATALYST AN ALKYLCYCLOOLEFIN, AN AROMATIC HYDROCARBON HAVING TWO SATURATED HYDROCARBON RADICAL SUBSTITUENTS IN PARA POSITIONS TO EACH OTHER AND IN WHICH ONE OF THESE HYDROCARBON RADICAL SUBSTITUENTS HAS AT LEAST ONE AND NOT MORE THAN TWO HYDROGEN ATOMS COMBINED WITH THE CARBON ATOM THAT IS JOINED TO THE AROMATIC RING, AND AN AROMATIC HYDROCARBON HAVING NOT MORE THAN ONE STAURATED HYDROCARBON GROUP BOUND TO THE AROMATIC RING.
References Cited (Backward Citations)
US2010949A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-08 | 1957-09-07 | 1958-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-08 | 1961-09-07 | 1962-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-08 | 1965-09-07 | 1966-03-09 | $7700.00 | Window Closed / Lapsed |