Patent US3296104A successfully refreshed from Google Patents.
US3296104A
Expired / Lapsed
US
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Electrodeposition of zinc from pyrophosphate solutions
Assignee: Hanson Van Winkle Munning Co
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Filing: 1963-10-29
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Granted: 1967-01-03
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Expires: 1983-10-29
Abstract
No abstract record available.
Inventors
- 👤 Frederick W Eppensteiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:09
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
THE PROCESS FOR PRODUCING BRIGHT ZINC DEPOSITS WHICH COMPRISES ELECTROPLATING ZINC FROM AN AQUEOUS ALKALINE PYROPHOSPHATE SOLUTIN CONTAINING AT LEAST ONE ZINC SALT IN WHICH THERE IS DISSOLVED FROM ABOUT 0.5 TO ABOUT 5.0 GRAMS PER LITER OF A CARRIER SELECTED FROM THE GROUP CONSISTING OF (A) BIS (SULFONAPHYTHYL) METHANE, (B) NAPHTHALENE DERIVATES THAT CONTAIN SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF SULFONIC ACIDS AND THEIR ALKALI METAL SALTS, HYDROXYL, AMINO AND IMINO RADICALS, (C) BENZENE DERIVATIVES CONTAINING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF SULFONIC ACIDS AND THEIR SALTS WITH ALKALI METAL AND AMMONIUM, ALKYL AND IMINO RADICALS, AND (D) ALLYL SULFONIC ACID AND ITS SALTS WITH ALKALI METALS, AND FROM ABOUT 0.025 TO ABOUT 0.2 GRAM PER LITER OF A CARBONYL COMPOUND HAVING A STRUCTURAL FORMULA SELETECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
134 words
THE PROCESS FOR PRODUCING BRIGHT ZINC DEPOSITS WHICH COMPRISES ELECTROPLATING ZINC FROM AN AQUEOUS ALKALINE PYROPHOSPHATE SOLUTIN CONTAINING AT LEAST ONE ZINC SALT IN WHICH THERE IS DISSOLVED FROM ABOUT 0.5 TO ABOUT 5.0 GRAMS PER LITER OF A CARRIER SELECTED FROM THE GROUP CONSISTING OF (A) BIS (SULFONAPHYTHYL) METHANE, (B) NAPHTHALENE DERIVATES THAT CONTAIN SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF SULFONIC ACIDS AND THEIR ALKALI METAL SALTS, HYDROXYL, AMINO AND IMINO RADICALS, (C) BENZENE DERIVATIVES CONTAINING SUBSTITUENTS SELECTED FROM THE GROUP CONSISTING OF SULFONIC ACIDS AND THEIR SALTS WITH ALKALI METAL AND AMMONIUM, ALKYL AND IMINO RADICALS, AND (D) ALLYL SULFONIC ACID AND ITS SALTS WITH ALKALI METALS, AND FROM ABOUT 0.025 TO ABOUT 0.2 GRAM PER LITER OF A CARBONYL COMPOUND HAVING A STRUCTURAL FORMULA SELETECTED FROM THE GROUP CONSISTING OF
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) | 1970-01-02 | 1970-07-04 | 1971-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-02 | 1974-07-04 | 1975-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-02 | 1978-07-04 | 1979-01-03 | $7700.00 | Window Closed / Lapsed |