Patent US2061779A successfully refreshed from Google Patents.
US2061779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for preparing antioxidants
Assignee: Goodrich Corp
•
Filing: 1932-06-10
•
Granted: 1936-11-24
•
Expires: 1952-06-10
Abstract
No abstract record available.
Inventors
- 👤 Waldo L Semon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:50
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/18; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437
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) | 1939-11-24 | 1940-05-25 | 1940-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-11-24 | 1944-05-25 | 1944-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-11-24 | 1948-05-25 | 1948-11-24 | $7700.00 | Window Closed / Lapsed |