US2981617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inhibited fuming nitric acids
Assignee: Individual
•
Filing: 1957-06-25
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Granted: 1961-04-25
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Expires: 1977-06-25
Abstract
No abstract record available.
Inventors
- 👤 Karl F Hager
- 👤 William R Lucas
- 👤 Douglas B Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:43
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/04; C06; C06B; C06B23/00; C06B23/02; C06B47/00; C06B47/02; C06B47/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
THE LIQUID FUEL COMPOSITION CONSISTING ESSENTIALLY OF NITRIC ACID OF THE GROUP CONSISTING OF RED FUMING NITRIC ACID AND WHITE FUMING NITRIC ACID TO WHICH HAS BEEN ADDED A MAXIMUM OF 1% OF AN ORGANIC COMPOUND OF THE CLASS CONSISTING OF 8-NITROQUINOLINE, 8-HYDROXYQUINOLINE, 5-NITROQUINOLINE, 6,8DINTROQUINOLINE, 7-HYDROYXYQUINOLINE, AND 2-HYDROXYQUINOLINE, TO INHIBIT THE CORROSION OF FERROUS METAL SURFACES.
Claim 2
Dependent Claim
56 words
THE LIQUID FUEL COMPOSITION CONSISTING ESSENTIALLY OF NITRIC ACID OF THE GROUP CONSISTING OF RED FUMING NITRIC ACID AND WHITE FUMING NITRIC ACID TO WHICH HAS BEEN ADDED A MAXIMUM OF 1% OF AN ORGANIC COMPOUND OF THE CLASS CONSISTING OF 8-NITROQUINOLINE, 8-HYDROXYQUINOLINE, 5-NITROQUINOLINE, 6,8DINTROQUINOLINE, 7-HYDROYXYQUINOLINE, AND 2-HYDROXYQUINOLINE, TO INHIBIT THE CORROSION OF FERROUS METAL SURFACES.
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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |