US3051634A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baths for the production of copper electroplates
Assignee: Dehydag Deutsche Hydrierwerke GmbH
•
Filing: 1958-11-21
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Granted: 1962-08-28
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Expires: 1978-11-21
Abstract
No abstract record available.
Inventors
- 👤 Strauss Wennemar
- 👤 Willmund Wolf-Dieter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:54
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
AN ACID COPPER ELECTROPLATING BATH FOR PRODUCING BRIGHT COPPER DEPOSITS COMPRISING AN AQUEOUS ACID SOLUTION OF A COPPER SALT, AN ORGANIC SULFORNIC ACID FULL BRIGHTENING AGENT HAVING AT LEAST ONE CARON ATOM LINKED ONLY TO HETEROATOMS AND A SHORT ALIPHATIC RADICAL LINKED TO BE SAID CARBON ATOM THROUGH A MEMBER OF THE GROUP CONSISTING OF A NITROGEN ATOM AND A SULFUR ATOM, THE ALIPHATIC RADICAL HAVING ATTACHED THERETO A SULFONIC ACID GROUP, AND A COMPOUND IN SUFFICIENT AMOUNT TO BROADEN THE EFFECTIVE OPERATING RANGES OF CURRENT DENSITY AND TEMPERATURE, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF THIOCARBOXYLIC ACID AMIDES AND ISOTHIOCARBOXYLIC ACID AMIDES.
Claim 2
Dependent Claim
105 words
AN ACID COPPER ELECTROPLATING BATH FOR PRODUCING BRIGHT COPPER DEPOSITS COMPRISING AN AQUEOUS ACID SOLUTION OF A COPPER SALT, AN ORGANIC SULFORNIC ACID FULL BRIGHTENING AGENT HAVING AT LEAST ONE CARON ATOM LINKED ONLY TO HETEROATOMS AND A SHORT ALIPHATIC RADICAL LINKED TO BE SAID CARBON ATOM THROUGH A MEMBER OF THE GROUP CONSISTING OF A NITROGEN ATOM AND A SULFUR ATOM, THE ALIPHATIC RADICAL HAVING ATTACHED THERETO A SULFONIC ACID GROUP, AND A COMPOUND IN SUFFICIENT AMOUNT TO BROADEN THE EFFECTIVE OPERATING RANGES OF CURRENT DENSITY AND TEMPERATURE, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF THIOCARBOXYLIC ACID AMIDES AND ISOTHIOCARBOXYLIC ACID AMIDES.
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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) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |