US2943909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion- and fungus-inhibiting composition
Assignee: Shell USA Inc
•
Filing: 1957-08-26
•
Granted: 1960-07-05
•
Expires: 1977-08-26
Abstract
No abstract record available.
Inventors
- 👤 Wachter Aaron
- 👤 Wieland Rita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:58
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
38 words
A COMPISITION COMPRISING ABOUT 25-75% BY WEIGHT OF A NITRITE OF THE GROUP CONSISTING OF DICYCLOHEXYLAMMONIUM NITRATE AND DIISOPROPYLAMMONIUM NITRATE AND ABOUT 75-25% BY WEIGHT OF A NITROPHENATE OF THE GROUP CONSISTING OF CYCLOHEXYLAMMONIUM NITROPHENATE AND DICYCLOHEXYLAMMONIUM NITROPHENATE.
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) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |