US2295674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dealkylation using aluminum compounds as catalysts
Assignee: Bakelite Corp
•
Filing: 1942-01-28
•
Granted: 1942-09-15
•
Expires: 1962-01-28
Abstract
No abstract record available.
Inventors
- 👤 Virgil E Meharg
- 👤 Kenneth W Coons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:40
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/02; B01J21/04; C; C07; C07C; C07C37/00; C07C37/50; 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) | 1945-09-14 | 1946-03-16 | 1946-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-09-14 | 1950-03-16 | 1950-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-09-14 | 1954-03-16 | 1954-09-15 | $7700.00 | Window Closed / Lapsed |