US2050188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing derivatives of hydroxy aryl compounds
Assignee: SHARPLES SOLVENTS Corp
•
Filing: 1932-07-20
•
Granted: 1936-08-04
•
Expires: 1952-07-20
Abstract
No abstract record available.
Inventors
- 👤 William M Lee
- 👤 Lee H Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:39
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/01; C07C37/055; C07C37/11; C07C37/14; C07C41/00; C07C41/01; C07C41/05; C07C41/06; C07C2602/00; C07C2602/02; C07C2602/04; C07C2602/08; C07C2602/36; C07C2602/42
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) | 1939-08-04 | 1940-02-03 | 1940-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-08-04 | 1944-02-03 | 1944-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-08-04 | 1948-02-03 | 1948-08-04 | $7700.00 | Window Closed / Lapsed |