US2352200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of toluene
Assignee: Universal Oil Products Co
•
Filing: 1941-05-24
•
Granted: 1944-06-27
•
Expires: 1961-05-24
Abstract
No abstract record available.
Inventors
- 👤 Vladimir N Ipatieff
- 👤 George S Monroe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:24
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/76; C07C2521/00; C07C2521/06; C07C2521/08; C07C2521/12; C07C2523/00; C07C2523/12; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/943
Claims Analysis
Total Claims: 0
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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) | 1947-06-27 | 1947-12-27 | 1948-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-06-27 | 1951-12-27 | 1952-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-06-27 | 1955-12-27 | 1956-06-27 | $7700.00 | Window Closed / Lapsed |