Patent US3197523A successfully refreshed from Google Patents.
US3197523A
Expired / Lapsed
US
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Dealkylation of alkylaromatic compounds
Assignee: Universal Oil Products Co
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Filing: 1961-11-03
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Granted: 1965-07-27
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Expires: 1981-11-03
Abstract
No abstract record available.
Inventors
- 👤 Michalko Edward
- 👤 Richard E Rausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:43
CPC Classifications
C; C07; C07C; C07C4/00; C07C4/08; C07C4/12; C07C4/14; C07C4/18; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; C07C2521/00; C07C2521/02; C07C2521/04; C07C2521/06; C07C2523/00; C07C2523/14; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/28; C07C2523/30; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS WHICH COMPRISES HYDRODEALKYLATING AN ALKYAROMATIC COMPOUND IN THE PRESENCE OF HYDROGEN AND A CATALYST PREPARED BY COPRECIPITATING ALUMINA AND AT LEAST ONE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF TIN, TITANIUM AND ZIRCONIUM, CALCINING THE RESULTANT PRECIPITATE AND THEREAFTER COMPOSITING WITH THE CALCINED PRECIPITATE AT LEAST ONE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, MOLYBEDNUM AND TUNGSTEN.
Claim 2
Dependent Claim
66 words
A PROCESS WHICH COMPRISES HYDRODEALKYLATING AN ALKYAROMATIC COMPOUND IN THE PRESENCE OF HYDROGEN AND A CATALYST PREPARED BY COPRECIPITATING ALUMINA AND AT LEAST ONE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF TIN, TITANIUM AND ZIRCONIUM, CALCINING THE RESULTANT PRECIPITATE AND THEREAFTER COMPOSITING WITH THE CALCINED PRECIPITATE AT LEAST ONE OXIDE OF A METAL SELECTED FROM THE GROUP CONSISTING OF CHROMIUM, MOLYBEDNUM AND TUNGSTEN.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |