US3260660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic stripping of platings from aluminum and zinc articles
Assignee: A R WINARICK Inc
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Filing: 1964-01-13
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Granted: 1966-07-12
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Expires: 1984-01-13
Abstract
No abstract record available.
Inventors
- 👤 William G Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:56
CPC Classifications
C; C25; C25F; C25F5/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
THE PROCESS OF ELECTROLYTICALLY STRIPPING OFF METAL PLATINGS OF THE GROUP CONSISTING OF CHROMIUM, COPPER, NICKEL AND MIXTURES THEREOF FROM ARTICLES MADE OF ALLOYS OF THE GROUP CONSISTING OF ALUMINUM AND ZINC, WHICH PROCESS COMPRISES PREPARING AN AQUEOUS BATH CONSISTING ESSENTIALLY OF BETWEEN ABOUT 25 AND ABOUT 35 PARTS BY VOLUME OF PHOSPHORIC ACID HAVING A SPECIFIC GRAVITY OF BETWEEN ABOUT 1.579 AND ABOUT 1.689, BETWEEN ABOUT 5 AND ABOUT 15 PARTS BY VOLUME OF SULPHURIC ACID HAVING A SPECIFIC GRAVITY OF BETWEEN ABOUT 1.543 AND ABOUT 1.706, AND SUFFICIENT WATER TO ADJUST THE CONCENTRATION OF THE BATH TO A SPECIFIC GRAVITY OF ABOUT 1.550; PLACING THE ARTICLES IN THE BATH; CONNECTING THE POSITIVE TERMINAL OF A D.C. SOURCE TO THE ARTICLES TO MAKE THE ARTICLES ANODES IN THE BATH; PLACING A CATHODE IN CONTACT WITH THE BATH; CONNECTING THE NEGATIVE TERMINAL OF THE D.C. SOURCE TO THE CATHODE; AND SUBJECTING THE ARTICLES TO AN ELECTROLYTIC STRIPPING FOR A DURATION OF TIME AND AT A CURRENT DENSITY TO REMOVE ALL OF THE METAL PLATINGS THEREFROM AND TO CAUSE SAID ARTICLES TO BE PROVIDED WITH A SMOOTH SURFACE FREE FROM ETCH MARKS.
Claim 2
Dependent Claim
191 words
THE PROCESS OF ELECTROLYTICALLY STRIPPING OFF METAL PLATINGS OF THE GROUP CONSISTING OF CHROMIUM, COPPER, NICKEL AND MIXTURES THEREOF FROM ARTICLES MADE OF ALLOYS OF THE GROUP CONSISTING OF ALUMINUM AND ZINC, WHICH PROCESS COMPRISES PREPARING AN AQUEOUS BATH CONSISTING ESSENTIALLY OF BETWEEN ABOUT 25 AND ABOUT 35 PARTS BY VOLUME OF PHOSPHORIC ACID HAVING A SPECIFIC GRAVITY OF BETWEEN ABOUT 1.579 AND ABOUT 1.689, BETWEEN ABOUT 5 AND ABOUT 15 PARTS BY VOLUME OF SULPHURIC ACID HAVING A SPECIFIC GRAVITY OF BETWEEN ABOUT 1.543 AND ABOUT 1.706, AND SUFFICIENT WATER TO ADJUST THE CONCENTRATION OF THE BATH TO A SPECIFIC GRAVITY OF ABOUT 1.550; PLACING THE ARTICLES IN THE BATH; CONNECTING THE POSITIVE TERMINAL OF A D.C. SOURCE TO THE ARTICLES TO MAKE THE ARTICLES ANODES IN THE BATH; PLACING A CATHODE IN CONTACT WITH THE BATH; CONNECTING THE NEGATIVE TERMINAL OF THE D.C. SOURCE TO THE CATHODE; AND SUBJECTING THE ARTICLES TO AN ELECTROLYTIC STRIPPING FOR A DURATION OF TIME AND AT A CURRENT DENSITY TO REMOVE ALL OF THE METAL PLATINGS THEREFROM AND TO CAUSE SAID ARTICLES TO BE PROVIDED WITH A SMOOTH SURFACE FREE FROM ETCH MARKS.
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) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |