US2623835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticorrosive metal article and method of making same
Assignee: Shell Development Co
•
Filing: 1947-05-31
•
Granted: 1952-12-30
•
Expires: 1967-05-31
Abstract
No abstract record available.
Inventors
- 👤 Johannes A Van Melsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:01
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/003; C07C; C07C65/00; C07C65/01; C07C65/03; C07C65/05; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/124
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
70 words
IN A METHOD OF INHIBITING CORROSION AND RUSTING OF METAL SURFACES BY APPLYING TO SAID METAL SURFACES A CORROSION-PROTECTIVE COMPOSITION COMPRISING A RELATIVELY VOLATILE NON-POLAR LIQUID CARRIER AND AN EFFECTIVE CORROSION-INHIBITING AGENT, THE IMPROVEMENT WHICH COMPRISES UTILIZING AS THE CORROSION-PREVENTIVE COMPOSITION A COMPOSITION COMPRISING NORMALLY LIQUID POLAR AND NON-POLAR VEHICLE BOILING BELOW 600* F. AND FROM ABOUT 0.1% TO 2% BY WEIGHT OF A POLYVALENT METAL-HYDROXY AROMATIC MONOCARBOXYLIC ACID SALT.
References Cited (Backward Citations)
US2311505A
Cited
US2334158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-30 | 1956-06-30 | 1956-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-30 | 1960-06-30 | 1960-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-30 | 1964-06-30 | 1964-12-30 | $7700.00 | Window Closed / Lapsed |