Patent US2809127A successfully refreshed from Google Patents.
US2809127A
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US
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Surface treatment of metals
Assignee: Metal Gas Co Ltd
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Filing: 1953-12-21
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Granted: 1957-10-08
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Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Gibson Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
C; C23; C23C; C23C26/00; C23C10/00; C23C10/60; C23C12/00; Y; Y10; Y10S; Y10S205/00; Y10S205/917; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12583; Y10T428/1259; Y10T428/12674; Y10T428/12736; Y10T428/12743; Y10T428/12771; Y10T428/12778
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN THE TREATMENT OF METAL ALLOYS TO INCREASE THEIR RESISTANCE TO OXIDATION AND CORROSION AT HIGH TEMPERATURES, THE PROCESS WHICH CONSISTS SUBSTANTIALLY IN FIRST CHROMIZING THE ALLOY TO BE TREATED; SAID ALLOY BEING COMPOSED OF AT LEAST TWO METALS SELECTED FROM THE CLASS CONSISTING OF ALUMINIUM, CHROMIUM, COBALT, COPPER, IRON, MANGANESE, MOLYBDENUM, NICKEL, NIOBIUM, SILICON, TITANIUM, TUNGSTEN, TANTALUM, VANADIUM, ZICONIUM AND BORON; TO PRODUCE A SURFACE LAYER ENRICHED IN CHROMIUM BUT NOT COMPOSED ENTIRELY OF THIS METAL; THEN APPLYING A SUPERFICAL COATING OF ALUMINIUM AND HEATING IN AN OXYGEN-CONTAINING ATMOSPHERE TO OXIDIZE THE ALUMINIUM COATING AND TO ALLOY IT WITH THE CHROMIZED SURFACE OF THE SAID ALLOY.
Claim 2
Dependent Claim
107 words
IN THE TREATMENT OF METAL ALLOYS TO INCREASE THEIR RESISTANCE TO OXIDATION AND CORROSION AT HIGH TEMPERATURES, THE PROCESS WHICH CONSISTS SUBSTANTIALLY IN FIRST CHROMIZING THE ALLOY TO BE TREATED; SAID ALLOY BEING COMPOSED OF AT LEAST TWO METALS SELECTED FROM THE CLASS CONSISTING OF ALUMINIUM, CHROMIUM, COBALT, COPPER, IRON, MANGANESE, MOLYBDENUM, NICKEL, NIOBIUM, SILICON, TITANIUM, TUNGSTEN, TANTALUM, VANADIUM, ZICONIUM AND BORON; TO PRODUCE A SURFACE LAYER ENRICHED IN CHROMIUM BUT NOT COMPOSED ENTIRELY OF THIS METAL; THEN APPLYING A SUPERFICAL COATING OF ALUMINIUM AND HEATING IN AN OXYGEN-CONTAINING ATMOSPHERE TO OXIDIZE THE ALUMINIUM COATING AND TO ALLOY IT WITH THE CHROMIZED SURFACE OF THE SAID ALLOY.
References Cited (Backward Citations)
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Cited
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US2657127A
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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) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |