Patent US3548017A successfully refreshed from Google Patents.
US3548017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xylene isomerization process
Assignee: Texaco Inc
•
Filing: 1968-09-25
•
Granted: 1970-12-15
•
Expires: 1988-09-25
Abstract
No abstract record available.
Inventors
- 👤 Gayle P Hebert
- 👤 Jerry C Perciful
- 👤 Ambrose J Startz
- 👤 Halsey E Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:09
CPC Classifications
C; C07; C07C; C07C15/00; C07C15/02; C07C15/067; C07C15/08; C07C5/00; C07C5/22; C07C5/27; C07C5/2702; C07C5/2729; C07C5/2732; C07C7/00; C07C7/005; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/90; Y10S585/901; Y10S585/905; Y10S585/949; Y10S585/95
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2837581A
Cited
US3211798A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-12-14 | 1974-06-15 | 1974-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-12-14 | 1978-06-15 | 1978-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-12-14 | 1982-06-15 | 1982-12-15 | $7700.00 | Window Closed / Lapsed |