US2967135A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electroplating baths for hard bright gold deposits
Assignee: Individual
•
Filing: 1960-06-08
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Granted: 1961-01-03
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Expires: 1980-06-08
Abstract
No abstract record available.
Inventors
- 👤 Barnet D Ostrow
- 👤 Fred I Nobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:59
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/56; C25D3/62; C25D3/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
AN ELECTROPLATING BATH FOR PRODUCING HARD AND BRIGHT DEPOSITS OF A METAL SELECTED FROM THE GROUP CONSISTING OF GOLD AND GOLD-BASE ALLOYS COMPRISING AN AQUEOUS SOLUTION OF A SOLUBLE GOLD-ALKALI METAL CYANIDE, A SUFFICIENT AMOUNT OF A SUBSTANCE TAKEN FROM THE CLASS CONSISTING OF ALKYLOL-, ALKYLENE- AND ALKANOL-AMINES HAVING 1 TO 12 CARBON ATOMS AND POLYMERS THEREOF TO PRODUCE A BRIGHTER DEPOSIT THAN IS OBTAINED IN THE ABSENCE THEREOF, SAID BATH HAVING A PH OF ABOUT 2.5 TO 6.5.
Claim 2
Dependent Claim
79 words
AN ELECTROPLATING BATH FOR PRODUCING HARD AND BRIGHT DEPOSITS OF A METAL SELECTED FROM THE GROUP CONSISTING OF GOLD AND GOLD-BASE ALLOYS COMPRISING AN AQUEOUS SOLUTION OF A SOLUBLE GOLD-ALKALI METAL CYANIDE, A SUFFICIENT AMOUNT OF A SUBSTANCE TAKEN FROM THE CLASS CONSISTING OF ALKYLOL-, ALKYLENE- AND ALKANOL-AMINES HAVING 1 TO 12 CARBON ATOMS AND POLYMERS THEREOF TO PRODUCE A BRIGHTER DEPOSIT THAN IS OBTAINED IN THE ABSENCE THEREOF, SAID BATH HAVING A PH OF ABOUT 2.5 TO 6.5.
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) | 1964-01-03 | 1964-07-04 | 1965-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-03 | 1968-07-04 | 1969-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-03 | 1972-07-04 | 1973-01-03 | $7700.00 | Window Closed / Lapsed |