US2948643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and compositions for producing aluminum surface conversion coatings
Assignee: Turco Products Inc
•
Filing: 1958-01-22
•
Granted: 1960-08-09
•
Expires: 1978-01-22
Abstract
No abstract record available.
Inventors
- 👤 George H Pimbley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:38
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34; C23C22/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR APPLYING A COATING TO SURFACES OF OBJECTS OF ALUMINUM AND ITS ALLOYS, WHICH COMPRISES TREATING SAID OBJECTS IN AN AQUEOUS ACIDIC BATH CONSISTING ESSENTIALLY OF ABOUT 0.5 TO ABOUT 8.0 GRAMS PER LITER OF A CATION OF THE GROUP CONSISTING OF ZINC, CADMIUM AND MERCURY, A MINOR EFFECTIVE AMOUNT OF A HALOGEN-CONTAINING ANION, AND AN ANION CONTAINING HEXAVALENT CHROMIUM IN AN AMOUNT EQUIVALENT TO BETWEEN ABOUT 0.5 AND ABOUT 9.0 GRAMS PER LITER OF CHROMIUM.
Claim 2
Dependent Claim
78 words
A PROCESS FOR APPLYING A COATING TO SURFACES OF OBJECTS OF ALUMINUM AND ITS ALLOYS, WHICH COMPRISES TREATING SAID OBJECTS IN AN AQUEOUS ACIDIC BATH CONSISTING ESSENTIALLY OF ABOUT 0.5 TO ABOUT 8.0 GRAMS PER LITER OF A CATION OF THE GROUP CONSISTING OF ZINC, CADMIUM AND MERCURY, A MINOR EFFECTIVE AMOUNT OF A HALOGEN-CONTAINING ANION, AND AN ANION CONTAINING HEXAVALENT CHROMIUM IN AN AMOUNT EQUIVALENT TO BETWEEN ABOUT 0.5 AND ABOUT 9.0 GRAMS PER LITER OF CHROMIUM.
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) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |