US3337430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrahigh-speed chromium electrodeposition
Assignee: M&T Chemicals Inc
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Filing: 1963-08-05
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Granted: 1967-08-22
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Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 Johnson Andy Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:53
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE PROCESS FOR ELECTROPLATING BRIGHT CHROMIUM PLATE AT HIGH PLATING SPEEDS WHICH COMPRISES MAINTAINING A CHROMIUM PLATING BATH CONTAINING CHROMIC ACID AND AT LEAST ONE CATALYST ANION SELECTED FROM THE GROUP CONSISTING OF SULFATE, FLUORIDE, COMPLEX FLUORIDE AND MIXTURES THEREOF WHEREIN THE VARIABLES CHROMIC ACID CONCENTRATION, RATIO OF CHROMIC ACID TO THE SUM OF THE CONCENTRATIONS OF SAID CATALYST ANIONS, PROPORTION OF FLUORIDE AND COMPLEX FLUORIDE TO SULFATE, AND TEMPERATURE ARE WITHIN THE LIMITS
Claim 2
Dependent Claim
74 words
THE PROCESS FOR ELECTROPLATING BRIGHT CHROMIUM PLATE AT HIGH PLATING SPEEDS WHICH COMPRISES MAINTAINING A CHROMIUM PLATING BATH CONTAINING CHROMIC ACID AND AT LEAST ONE CATALYST ANION SELECTED FROM THE GROUP CONSISTING OF SULFATE, FLUORIDE, COMPLEX FLUORIDE AND MIXTURES THEREOF WHEREIN THE VARIABLES CHROMIC ACID CONCENTRATION, RATIO OF CHROMIC ACID TO THE SUM OF THE CONCENTRATIONS OF SAID CATALYST ANIONS, PROPORTION OF FLUORIDE AND COMPLEX FLUORIDE TO SULFATE, AND TEMPERATURE ARE WITHIN THE LIMITS
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |