US3088846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processes of treating nickel-phosphorus alloy coatings and the resulting modified coatings
Assignee: General American Transportation Corp
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Filing: 1962-01-24
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Granted: 1963-05-07
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Expires: 1982-01-24
Abstract
No abstract record available.
Inventors
- 👤 Warren G Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:49
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/31; C23C18/32; C23C18/34; C23C18/36; C23C22/00; C23C22/05; C23C22/06; C23C22/24; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/936; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12583; Y10T428/12736; Y10T428/1275; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/26; Y10T428/261; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE PROCESS OF INCREASING THE CORROSION RESISTANCE OF NICKEL-PHOSPHORUS COATING CARRIED BY A METAL WORKPIECE AND APPLIED THERETO BY CHEMICAL PLATING FROM AN AQUEOUS PLATING BATH OF NICKEL CATION-HYPOPHOSPHITE ANION TYPE, WHEREIN SAID COATING COMPRISES BY WEIGHT ABOUT 85% TO 97% NICKEL AND ABOUT 3% TO 15% PHOSPHORUS; SAID PROCESS COMPRISING EMMERSING SAID COATED WORKPIECE DURING A SUITABLE TIME INTERVAL IN A TREATMENT BATH SAID TREATMENT BATH ESSENTIALLY COMPRISING AN AQUEOUS SOLUTION OF A WATER SOLUBLE COMPOUND SELECTED FROM THE CLASS CONSISTING OF CHROMIC ACID ANHYDRIDE, ALKALI METAL CHROMATE AND ALKALI METAL DICHROMATE, SAID TREATMENT BATH CONTAINING BY WEIGHT AT LEAST ABOUT 1 2% CHROMATE IONS.
Claim 2
Dependent Claim
106 words
THE PROCESS OF INCREASING THE CORROSION RESISTANCE OF NICKEL-PHOSPHORUS COATING CARRIED BY A METAL WORKPIECE AND APPLIED THERETO BY CHEMICAL PLATING FROM AN AQUEOUS PLATING BATH OF NICKEL CATION-HYPOPHOSPHITE ANION TYPE, WHEREIN SAID COATING COMPRISES BY WEIGHT ABOUT 85% TO 97% NICKEL AND ABOUT 3% TO 15% PHOSPHORUS; SAID PROCESS COMPRISING EMMERSING SAID COATED WORKPIECE DURING A SUITABLE TIME INTERVAL IN A TREATMENT BATH SAID TREATMENT BATH ESSENTIALLY COMPRISING AN AQUEOUS SOLUTION OF A WATER SOLUBLE COMPOUND SELECTED FROM THE CLASS CONSISTING OF CHROMIC ACID ANHYDRIDE, ALKALI METAL CHROMATE AND ALKALI METAL DICHROMATE, SAID TREATMENT BATH CONTAINING BY WEIGHT AT LEAST ABOUT 1 2% CHROMATE IONS.
References Cited (Backward Citations)
US2975073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-06 | 1966-11-05 | 1967-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-06 | 1970-11-05 | 1971-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-06 | 1974-11-05 | 1975-05-07 | $7700.00 | Window Closed / Lapsed |