Patent US2422318A successfully refreshed from Google Patents.
US2422318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of aromatic compounds
Assignee: Domtar Inc
•
Filing: 1945-08-21
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Granted: 1947-06-17
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Expires: 1965-08-21
Abstract
No abstract record available.
Inventors
- 👤 Sturrock Murray Gray
- 👤 Lawe Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:27
CPC Classifications
B; B01; B01J; B01J21/00; B01J21/06; B01J21/066; B01J21/063; C; C07; C07C; C07C4/00; C07C2521/00; C07C2521/06; C07C2521/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2382239A
Cited
US2282327A
Cited
US2223162A
Cited
US2373982A
Cited
US2308415A
Cited
US2344911A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-16 | 1950-12-16 | 1951-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-16 | 1954-12-16 | 1955-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-16 | 1958-12-16 | 1959-06-17 | $7700.00 | Window Closed / Lapsed |