Patent US3825613A successfully refreshed from Google Patents.
US3825613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl transfer of alkyl aromatics with chromium or vanadium and manganese and tin metals on mordenite
Assignee: Ashland LLC
•
Filing: 1972-04-10
•
Granted: 1974-07-23
•
Expires: 1992-04-10
Abstract
Abstract ALKYL TRANSFER, SUCH AS DISPROPORTIONATION, OF ALKYL AROMATICS IS ACCOMPLISHED BY CONTACTING AN ALKYL AROMATIC FEED MATERIAL WITH A CATALYST COMPRISING CHROMIUM OR VANADIUM AND PROMOTER CONSISTING OF A MIXTURE OF TIN AND MANGANESE ALL SUPPORTED ON A SYNTHETIC MORDENITE.
Inventors
- 👤 R Kmecak
- 👤 S Kovach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:10
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C15/067; C07C15/08; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/061; C07C5/00; C07C5/22; C07C5/27; C07C5/2729; C07C5/2732; C07C5/2754; C07C6/00; C07C6/08; C07C6/12; C07C6/123; C07C6/126; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |