Patent US2435831A successfully refreshed from Google Patents.
US2435831A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of oxidation of alkyl esters of abietic acid
Assignee: Harvel Research Corp
•
Filing: 1944-02-12
•
Granted: 1948-02-10
•
Expires: 1964-02-12
Abstract
No abstract record available.
Inventors
- 👤 Mortimer T Harvey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:12
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/30; C07C67/313; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-09 | 1951-08-11 | 1952-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-09 | 1955-08-11 | 1956-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-09 | 1959-08-11 | 1960-02-10 | $7700.00 | Window Closed / Lapsed |