US2623912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of polycyclic aromatic compounds
Assignee: Phillips Petroleum Co
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Filing: 1949-12-19
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Granted: 1952-12-30
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Expires: 1969-12-19
Abstract
No abstract record available.
Inventors
- 👤 Fredrick M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:24
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/54; C07C2/64; C07C2/66; C07C2521/00; C07C2521/16; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2527/1213; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26; C07C2603/40; C07C2603/42; C07C2603/48
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
54 words
A PROCESS FOR THE PRODUCTION OF PARTIALLY HYDROGENATED POLYCYCLIC ORGANIC COMPOUND, WHICH COMPRISES REACTING 4-VINYL-1-CYCLOHEXENE WITH A CARBOCYCLIC AROMATIC COMPOUND HAVING ON EACH OF TWO ADJACENT NUCLEAR CARBON ATOMS A REPLACEABLE HYDROGEN ATOM AND HAVING NOT MORE THAN TWO CARBOCYCLIC RINGS, UNDER CATALYTIC ALKYLATION CONDITIONS FOR ALKYLATING AN AROMATIC HYDROCARBON WITH AN ALIPHATIC OLEFIN.
References Cited (Backward Citations)
US2386507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |