US3344200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for selective partial hydrogenation of polyaromatic compounds
Assignee: Shell USA Inc
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Filing: 1964-11-30
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Granted: 1967-09-26
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Expires: 1984-11-30
Abstract
No abstract record available.
Inventors
- 👤 Milton M Wald
- 👤 William E Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:12
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/02; C07C5/10; C07C5/11; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/38; C07C2523/40; C07C2523/42; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/125; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/10; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/90
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR SELECTIVELY REDUCING AN AROMATIC CONPOUND HAVING FROM 2 TO 4 NUCLEI AND 0 TO 2 ALKYL SUBSTITUENTS OF 1 TO 4 CARBON ATOMS AND MIXTURES THEREOF WHICH COMPRISES CONTACTING THE AROMATIC COMPOUND WITH A CATALYTICALLY EFFECTIVE AMOUNT OF ALUMINUM HALIDE AND HI UNDER HYDROGENATION CONDITIONS AND RECOVERING A PARTIALLY HYDROGENATED PRODUCT HAVING ONE AROMATIC RING PER MOLECULE.
Claim 2
Dependent Claim
60 words
A PROCESS FOR SELECTIVELY REDUCING AN AROMATIC CONPOUND HAVING FROM 2 TO 4 NUCLEI AND 0 TO 2 ALKYL SUBSTITUENTS OF 1 TO 4 CARBON ATOMS AND MIXTURES THEREOF WHICH COMPRISES CONTACTING THE AROMATIC COMPOUND WITH A CATALYTICALLY EFFECTIVE AMOUNT OF ALUMINUM HALIDE AND HI UNDER HYDROGENATION CONDITIONS AND RECOVERING A PARTIALLY HYDROGENATED PRODUCT HAVING ONE AROMATIC RING PER MOLECULE.
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) | 1970-09-25 | 1971-03-27 | 1971-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-25 | 1975-03-27 | 1975-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-25 | 1979-03-27 | 1979-09-26 | $7700.00 | Window Closed / Lapsed |