Patent US3522022A successfully refreshed from Google Patents.
US3522022A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibited fuel oils
Assignee: Hoechst AG
•
Filing: 1969-02-03
•
Granted: 1970-07-28
•
Expires: 1989-02-03
Abstract
No abstract record available.
Inventors
- 👤 Adolf May
- 👤 Heinz Liebscher
- 👤 Heinz Muller
- 👤 Engelbert Krempl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:37
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C10L1/18; C10L1/188; C10L1/1881; C10L1/22; C10L1/222; C10L1/2222; C10L1/224; C10L1/232; C10L1/233; C10L1/2335
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2330524A
Cited
US2433243A
Cited
US2736658A
Cited
US2699427A
Cited
US2790779A
Cited
US2976179A
Cited
US2939842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |