US3247028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes for improving the corrosion resistance of ni-co-metal coatings containing boron
Assignee: Bayer AG
•
Filing: 1962-06-20
•
Granted: 1966-04-19
•
Expires: 1982-06-20
Abstract
No abstract record available.
Inventors
- 👤 Klein Heinz-Gunter
- 👤 Zirngiebl Eberhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/02; C01B35/04; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/32; C23C18/34; C23C18/48; C23C18/50; C23C22/00; C23C22/05; C23C22/06; C23C22/24; C23C22/33
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
84 words
A PROCESS FOR IMPROVING THE CORROSION RESISTANCE OF METAL COATINGS CONTAINING BORON AND A METAL SELECTED FROM THE GROUP CONSISTING OF NI, CO, AND NI-CO-SYSTEMS CHEMICALLY DEPOSITED FROM A PLATING SOLUTION CONTAINING AS ESSENTIAL INGREDIENTS A METAL SELECTED FROM THE GROUP CONSISTING OF NI, CO, AND NI CO-SYSTEMS AND A BOROHYDRIDE WHICH COMPRISES TREATING THE CHEMICALLY PLATED SURFACES WITH AN AQUEOUS SOLUTION CONTAINING A HEXAVALENT CHROMIUM COMPOUND, THE CHROMIUM COMPOUND BEING PRESENT IN AN AMOUNT BETWEEN 1 TO ABOUT 300 G./1. OF CHROMIC ACID.
Claim 2
Dependent Claim
84 words
A PROCESS FOR IMPROVING THE CORROSION RESISTANCE OF METAL COATINGS CONTAINING BORON AND A METAL SELECTED FROM THE GROUP CONSISTING OF NI, CO, AND NI-CO-SYSTEMS CHEMICALLY DEPOSITED FROM A PLATING SOLUTION CONTAINING AS ESSENTIAL INGREDIENTS A METAL SELECTED FROM THE GROUP CONSISTING OF NI, CO, AND NI CO-SYSTEMS AND A BOROHYDRIDE WHICH COMPRISES TREATING THE CHEMICALLY PLATED SURFACES WITH AN AQUEOUS SOLUTION CONTAINING A HEXAVALENT CHROMIUM COMPOUND, THE CHROMIUM COMPOUND BEING PRESENT IN AN AMOUNT BETWEEN 1 TO ABOUT 300 G./1. OF CHROMIC ACID.
Claim 3
Dependent Claim
43 words
A PROCESS ACCORDING TO CLAIM 1, WHEREIN SAID AQUEOUS SOLUTION ADDITIONALLY CONTAINS A MEMBER SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID AND SOLUBLE SALTS THEREOF, THE PHOSPHORIC ACID BEING PRESENT IN AN AMOUNT BETWEEN ABOUT 1 AND 20 G./1. OF AQUEOUS SOLUTION.
References Cited (Backward Citations)
US2516685A
Cited
US2497905A
Cited
US2477310A
Cited
US2819193A
Cited
US2975073A
Cited
US2990296A
Cited
US3062666A
Cited
US2996353A
Cited
US3088846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |