US3041257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromium electroplating
Assignee: Westinghouse Electric Corp
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Filing: 1960-08-25
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Granted: 1962-06-26
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Expires: 1980-08-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard P Cope
- 👤 John R Drobne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:52
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/04; C25D3/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
A CHROMAIC ACID PLATING BATH FOR THE ELECTRODEPOSITION OF CHROMIUM COMPRISING AN AQUEOUS ACIDIC HEXAVALENT CHROMIUM SOLUTION CONTAINING A NON-IONIC WETTING AGENT SELECTED FROM THE GROUP CONSISTING OF (1) POLYMERS OF ETHYLENE OXIDE HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM 1300 TO 1800, (2) A COGENERIC MIXTURE OF CONJUGATED POLYOXYPROPYLENE-PROLYOXYETHYLENE COMPOUNDS CONTAINING IN THEIR STRUCTURE OXYPROPYLENE GROUPS, OXYETHYLENE GROUPS AND AN ORGANIC RADICAL DERIVED FROM AN ORGANIC COMPOUND CONTAINING A PLURALITY OF REACTIVE HYDROGEN ATOMS, THE COMPOUNDS BEING CHARATERIZED IN THAT ALL OF THE OXYPROPYLENE GROUPS ARE PRESENT IN PLOYOXYPROPYLENE CHAINS THAT ARE ATTACHED TO THE ORGANIC RADICAL AT THE SITE OF A REACTIVE HYDROGEN ATOM TO THEREBY CONSTITUTE A POLYOXYPROPYLENE POLYMER, THE OXYETHYLENE GROUPS ARE ATTACHED TO THE POLYOXYPROPYLENE POLYMER IN POLYOXYETHYLENE CHAINS THE AVERAGE MOLECULAR WEIGHT OF THE POLYOXYPROPYLENE POLYMER IN THE MIXTURE BEING FROM ABOUT 1500 TO 1800 AS DETERMINED BY HYDROXYL NUMBER, AND THE OXYETHYLENE GROUPS PRESENT CONSTITUTE FROM ABOUT 80% 95% BY WEIGHT OF THE MIXTURE, AND (3) MIXTURES OF (1) AND (2) SAID NON-IONIC WETTING AGENT BEING PRESENT IN AN AMOUNT SUFFICIENT TO RETARD SUBSTANTIALLY THE LIBERATION OF CHROMIC ACID FUMES FROM SAID BATH.
Claim 2
Dependent Claim
190 words
A CHROMAIC ACID PLATING BATH FOR THE ELECTRODEPOSITION OF CHROMIUM COMPRISING AN AQUEOUS ACIDIC HEXAVALENT CHROMIUM SOLUTION CONTAINING A NON-IONIC WETTING AGENT SELECTED FROM THE GROUP CONSISTING OF (1) POLYMERS OF ETHYLENE OXIDE HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM 1300 TO 1800, (2) A COGENERIC MIXTURE OF CONJUGATED POLYOXYPROPYLENE-PROLYOXYETHYLENE COMPOUNDS CONTAINING IN THEIR STRUCTURE OXYPROPYLENE GROUPS, OXYETHYLENE GROUPS AND AN ORGANIC RADICAL DERIVED FROM AN ORGANIC COMPOUND CONTAINING A PLURALITY OF REACTIVE HYDROGEN ATOMS, THE COMPOUNDS BEING CHARATERIZED IN THAT ALL OF THE OXYPROPYLENE GROUPS ARE PRESENT IN PLOYOXYPROPYLENE CHAINS THAT ARE ATTACHED TO THE ORGANIC RADICAL AT THE SITE OF A REACTIVE HYDROGEN ATOM TO THEREBY CONSTITUTE A POLYOXYPROPYLENE POLYMER, THE OXYETHYLENE GROUPS ARE ATTACHED TO THE POLYOXYPROPYLENE POLYMER IN POLYOXYETHYLENE CHAINS THE AVERAGE MOLECULAR WEIGHT OF THE POLYOXYPROPYLENE POLYMER IN THE MIXTURE BEING FROM ABOUT 1500 TO 1800 AS DETERMINED BY HYDROXYL NUMBER, AND THE OXYETHYLENE GROUPS PRESENT CONSTITUTE FROM ABOUT 80% 95% BY WEIGHT OF THE MIXTURE, AND (3) MIXTURES OF (1) AND (2) SAID NON-IONIC WETTING AGENT BEING PRESENT IN AN AMOUNT SUFFICIENT TO RETARD SUBSTANTIALLY THE LIBERATION OF CHROMIC ACID FUMES FROM SAID BATH.
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) | 1965-06-25 | 1965-12-25 | 1966-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-25 | 1969-12-25 | 1970-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-25 | 1973-12-25 | 1974-06-26 | $7700.00 | Window Closed / Lapsed |