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US2986498A
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Process for the production of metal electrodeposits
Assignee: Dehydag Deutsche Hydrierwerke GmbH
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Filing: 1958-02-12
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Granted: 1961-05-30
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Expires: 1978-02-12
Abstract
No abstract record available.
Inventors
- 👤 Strauss Wennemar
- 👤 Willmund Wolf-Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:37
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A PROCESS OF PRODUCING BRIGHT METAL ELECTRODEPOSITS SAID METAL BEIGN SELECTED FROM THE GROUP CONSISTING OF COOPER, ZINC, CHROMIUM AND PRECIOUS METALS, FROM ELECTROPLATING BATHS CONTAINING IMPURITIES FOUND IN HARD WATER AND IN TECHNICAL GRADE METAL SALTS, AND CONTAINING A BRIGHTENING AGENT, THE STEP WHICH COMPRISES ADDING TO SUCH ELECTROPLATING BATHS 0.01 TO 15 GM./LITER OF AN ORGANIC AMINO COMPOUND FREE FROM CARBOXYL GROUPS AND HAVING THE GENERAL STRUCTURAL FORMULA
Claim 2
Dependent Claim
71 words
IN A PROCESS OF PRODUCING BRIGHT METAL ELECTRODEPOSITS SAID METAL BEIGN SELECTED FROM THE GROUP CONSISTING OF COOPER, ZINC, CHROMIUM AND PRECIOUS METALS, FROM ELECTROPLATING BATHS CONTAINING IMPURITIES FOUND IN HARD WATER AND IN TECHNICAL GRADE METAL SALTS, AND CONTAINING A BRIGHTENING AGENT, THE STEP WHICH COMPRISES ADDING TO SUCH ELECTROPLATING BATHS 0.01 TO 15 GM./LITER OF AN ORGANIC AMINO COMPOUND FREE FROM CARBOXYL GROUPS AND HAVING THE GENERAL STRUCTURAL FORMULA
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) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |