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US3075899A
Expired / Lapsed
US
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Baths for the production of metal electroplates
Assignee: Dehydag Deutsche Hydrierwerke GmbH
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Filing: 1959-04-20
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Granted: 1963-01-29
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Expires: 1979-04-20
Abstract
No abstract record available.
Inventors
- 👤 Strauss Wennemar
- 👤 Willmund Wolf-Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:58
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A METHOD FOR PRODUCING BRIGHT METAL ELECTRODEPOSITS ON A BASE METAL, WHICH COMPRISES ADDING AS A BRIGHTENING COMPOUND TO THE ELECTROPLATING BATH SOLUTION CONTAINING A COMPOUND OF THE METAL TO BE ELECTRODEPOSITED, A SULFONIC ACID COMPOUND HAVING A STRUCTURAL FORMULA, SELECTED FROM THE GROUP CONSISTING OF:
Claim 2
Independent Claim
46 words
A METHOD FOR PRODUCING BRIGHT METAL ELECTRODEPOSITS ON A BASE METAL, WHICH COMPRISES ADDING AS A BRIGHTENING COMPOUND TO THE ELECTROPLATING BATH SOLUTION CONTAINING A COMPOUND OF THE METAL TO BE ELECTRODEPOSITED, A SULFONIC ACID COMPOUND HAVING A STRUCTURAL FORMULA, SELECTED FROM THE GROUP CONSISTING OF:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |