US2765269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bath for plating bright gold
Assignee: Individual
•
Filing: 1954-11-19
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Granted: 1956-10-02
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Expires: 1974-11-19
Abstract
No abstract record available.
Inventors
- 👤 Barnet D Ostrow
- 👤 Fred I Nobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:55
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/92; B01D53/94; B01D53/944; C; C25; C25D; C25D3/00; C25D3/02; C25D3/48; F; F01; F01N; F01N13/00; F01N13/011; F01N13/017; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/28; F01N3/2839; F01N3/2846; F01N3/30; F01N3/34; F01N13/14; F01N2330/00; F01N2330/08; F01N2450/00; F01N2450/04; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN A BRIGHT GOLD PLATING BATH CONSISTING ESSENTIALLY OF GOLD CYANIDE AND FREE ALKALI METAL CYANIDE IN WATER SOLUTION, THE IMPROVEMENT WHICH COMPRISES THE ADDITION TO SAID BATH OF A CONDENSATION PRODUCT OF A FATTY ACID HAVING 8 TO 18 CARBON ATOMS WITH AN AMINO ACID AND HAVING THE FOLLOWING STRUCTURAL FORMULA:
Claim 2
Dependent Claim
52 words
IN A BRIGHT GOLD PLATING BATH CONSISTING ESSENTIALLY OF GOLD CYANIDE AND FREE ALKALI METAL CYANIDE IN WATER SOLUTION, THE IMPROVEMENT WHICH COMPRISES THE ADDITION TO SAID BATH OF A CONDENSATION PRODUCT OF A FATTY ACID HAVING 8 TO 18 CARBON ATOMS WITH AN AMINO ACID AND HAVING THE FOLLOWING STRUCTURAL FORMULA:
References Cited (Backward Citations)
FR1021637A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |