Patent US3328467A successfully refreshed from Google Patents.
Patent US2760891A successfully refreshed from Google Patents.
US2760891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective coating and method of applying same to metal parts
Assignee: Borg Warner Corp
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Filing: 1951-12-24
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Granted: 1956-08-28
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Expires: 1971-12-24
Abstract
No abstract record available.
Inventors
- 👤 Vernon R Nichols
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:50
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOD OF PROVIDING A PROTECTIVE COATING ON BRASS COPPER, ZINC, STEEL, ALUMINUM AND CADMIUM SURFACES OF METAL PARTS WHICH COMPRISES IMMERSING THE PARTS IN A PROTECTIVE COATING SOLUTION CONSISTING PER LITER OF WATER OF 150 TO 600 GRAMS CHROMIC OXIDE, 85 TO 170 GRAMS OF 66* BAUME'' SULPHURIC ACID, 43.4 TO 130.2 GRAMS OF NITRIC ACID (HNO3), AND NOT MORE THAN 22.5 GRAMS OF NICKEL SULPHATE HEXAHYDRATE (NISO1.6H2O) IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY RETARD EATING ACTION OF THE SOLUTION ON SAID METAL PARTS.
Claim 2
Independent Claim
85 words
THE METHOD OF PROVIDING A PROTECTIVE COATING ON BRASS COPPER, ZINC, STEEL, ALUMINUM AND CADMIUM SURFACES OF METAL PARTS WHICH COMPRISES IMMERSING THE PARTS IN A PROTECTIVE COATING SOLUTION CONSISTING PER LITER OF WATER OF 150 TO 600 GRAMS CHROMIC OXIDE, 85 TO 170 GRAMS OF 66* BAUME'' SULPHURIC ACID, 43.4 TO 130.2 GRAMS OF NITRIC ACID (HNO3), AND NOT MORE THAN 22.5 GRAMS OF NICKEL SULPHATE HEXAHYDRATE (NISO1.6H2O) IN AN AMOUNT SUFFICIENT TO SUBSTANTIALLY RETARD EATING ACTION OF THE SOLUTION ON SAID METAL PARTS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |