US3121032A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for applying a protective transparent coating to zinc and cadmium and composition therefor
Assignee: M&T Chemicals Inc
•
Filing: 1960-09-27
•
Granted: 1964-02-11
•
Expires: 1980-09-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Edgar J Seyb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:12
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24; C23C22/26; C23C22/27
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN AQUEOUS CHROMIC CID BATH USEFUL IN THE IMMERSION COATING OF ZINC AND CADMIUM, HAVING A PH BETWEEN 1.5 AND 3 AND CONSISTING ESSENTIALLY OF BETWEEN 3 G./L. AND 20 G./L. OF CHROMIC ACID, BETWEEN 0.45 G./L. AND 3.2 G./L. OF SULFATE IONS, BETWEEN 0.7 G./L. AND 6 G./L. OF NITRATE ION, AND BETWEEN 0.2 G./L. AND 1.6 G./L. OF AT LEAST ONE ION SELECTED FROM THE GROUP CONSISTING OF ACETATE AND BORATE, THE RATIO OF CHROMIC ACID TO SULFATE BEING BETWEEN 5:1 AND 15:1.
Claim 2
Dependent Claim
85 words
AN AQUEOUS CHROMIC CID BATH USEFUL IN THE IMMERSION COATING OF ZINC AND CADMIUM, HAVING A PH BETWEEN 1.5 AND 3 AND CONSISTING ESSENTIALLY OF BETWEEN 3 G./L. AND 20 G./L. OF CHROMIC ACID, BETWEEN 0.45 G./L. AND 3.2 G./L. OF SULFATE IONS, BETWEEN 0.7 G./L. AND 6 G./L. OF NITRATE ION, AND BETWEEN 0.2 G./L. AND 1.6 G./L. OF AT LEAST ONE ION SELECTED FROM THE GROUP CONSISTING OF ACETATE AND BORATE, THE RATIO OF CHROMIC ACID TO SULFATE BEING BETWEEN 5:1 AND 15:1.
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) | 1967-02-10 | 1967-08-12 | 1968-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-10 | 1971-08-12 | 1972-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-10 | 1975-08-12 | 1976-02-11 | $7700.00 | Window Closed / Lapsed |