US3030281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium reducer for cyanide plating baths
Assignee: Harshaw Chemical Co
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Filing: 1961-07-17
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Granted: 1962-04-17
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Expires: 1981-07-17
Abstract
No abstract record available.
Inventors
- 👤 Paul W Moy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:44
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; Y; Y10; Y10S; Y10S204/00; Y10S204/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A METHOD OF ELECTROPLATING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, CADMIUM, ZINC AND BRASS FROM A CYANIDE PLATING BATH COMPRISING ADDING TO SAID BATH A REDUCING AGENT IN QUANTITIES OF AT LEAST 0.1 GRAM PER LITER SELECTED FROM THE GROUP CONSISTING OF GLYOXAL AND PYRUVIC ALDEHYDE.
Claim 2
Independent Claim
49 words
A METHOD OF ELECTROPLATING A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER, CADMIUM, ZINC AND BRASS FROM A CYANIDE PLATING BATH COMPRISING ADDING TO SAID BATH A REDUCING AGENT IN QUANTITIES OF AT LEAST 0.1 GRAM PER LITER SELECTED FROM THE GROUP CONSISTING OF GLYOXAL AND PYRUVIC ALDEHYDE.
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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |