US2898234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing composite metallic bodies
Assignee: Commonwealth Engineering Company of Ohio
•
Filing: 1953-08-14
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Granted: 1959-08-04
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Expires: 1973-08-14
Abstract
No abstract record available.
Inventors
- 👤 Herman R Nack
- 👤 John R Whitacre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:27
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/06; C23C16/16; C23C16/02; C23C16/0272; C23C16/0281; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12903; Y10T428/12917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A GAS PLATING PROCESS FOR A FERROUS BASE METAL WHICH COMPRISES HEATING THE BASE METAL UNDER VACUUM CONDITIONS TO A TEMPERATURE OF ABOUT 250-400*F., CONTACTING THE BASE WITH GASEOUS NICKEL CARBONYL TO EFFECT DEPOSITION OF NICKEL ON THE BASE METAL, CONTACTING THIS FRESHLY DEPOSITED OF NICKEL UNDER SUBATANTIALLY THE SAME TEMPERATURE AND VACUUM CONDITIONS AND WITHOUT INTERRUPTION OF THE CONDITIONS WITH A GASEOUS MIXTURE OF CHROMIUM HEXACARBONYL AND NICKEL CARBONYL TO DEPOSIT ON THE NICKEL A COMBINATION LAYER OF CHROMIUM AND NICKEL, CUTTING OFF THE FLOW OF NICKEL CARBONYL, AND INCREASING THE FLOW RATE OF THE CHROMIUM CARBONYL TO DEPOSIT A LAYER OF CHROMIUM ON THE COMBINATION LAYER.
Claim 2
Dependent Claim
108 words
A GAS PLATING PROCESS FOR A FERROUS BASE METAL WHICH COMPRISES HEATING THE BASE METAL UNDER VACUUM CONDITIONS TO A TEMPERATURE OF ABOUT 250-400*F., CONTACTING THE BASE WITH GASEOUS NICKEL CARBONYL TO EFFECT DEPOSITION OF NICKEL ON THE BASE METAL, CONTACTING THIS FRESHLY DEPOSITED OF NICKEL UNDER SUBATANTIALLY THE SAME TEMPERATURE AND VACUUM CONDITIONS AND WITHOUT INTERRUPTION OF THE CONDITIONS WITH A GASEOUS MIXTURE OF CHROMIUM HEXACARBONYL AND NICKEL CARBONYL TO DEPOSIT ON THE NICKEL A COMBINATION LAYER OF CHROMIUM AND NICKEL, CUTTING OFF THE FLOW OF NICKEL CARBONYL, AND INCREASING THE FLOW RATE OF THE CHROMIUM CARBONYL TO DEPOSIT A LAYER OF CHROMIUM ON THE COMBINATION LAYER.
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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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |