US2748035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and composition for cleaning containers containing aluminum and tin
Assignee: Detrex Corp
•
Filing: 1953-07-21
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Granted: 1956-05-29
•
Expires: 1973-07-21
Abstract
No abstract record available.
Inventors
- 👤 Ira J Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/14; C23G1/22
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
93 words
IN A METHOD OF REMOVING INCRUSATIONS FROM A WORK OBJECT HAVING A SURFACE SELECTED FROM THE GROUP INCLUDING TIN, ALUMINUM AND THEIR OXIDES, IN WHICH METHOD THE OBJCT IS IMMERSED IN A HOT, AQUEOUS, STRONG ALKALI CLEANING SOLUTION IN THE PRESENCE OF A DISSIMILAR SURFACE SELECTED FROM THE GROUP CONSISTING OF TIN, ALUMINUM AND THEIR OXIDES, WHICH SOLUTION TENDS TO ATTACK THE SURFACE OF SAID WORK OBJECT BY GALVANIC CORROSIVE ACTION, THE NOVEL STEP WHICH COMPRISES INHIBITING SAID CORROSIVE ACTION BY INCORPORATING ABOUT 2% TO 8% BY WEIGHT FERRICYANIDE IONS INTO SAID SOLUTION.
References Cited (Backward Citations)
US1799930A
Cited
US2515529A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |