Patent US638213A successfully refreshed from Google Patents.
Patent US2469469A successfully refreshed from Google Patents.
US2469469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation inhibitors
Assignee: Texaco Inc
•
Filing: 1946-06-18
•
Granted: 1949-05-10
•
Expires: 1966-06-18
Abstract
No abstract record available.
Inventors
- 👤 Herman D Kluge
- 👤 Edwin C Knowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:10
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/136; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/20; C10L1/203; C11; C11B; C11B5/00; C11B5/0021; C11B5/0035; C10M2211/00; C10M2211/04; C10M2211/042; C10M2211/06; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB270283A
Cited
US1995063A
Cited
US2180008A
Cited
US2195510A
Cited
US2310710A
Cited
US2250384A
Cited
US2261888A
Cited
US2304728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |