US3015579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal coating process
Assignee: Chromizing Corp
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Filing: 1959-06-15
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Granted: 1962-01-02
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Expires: 1979-06-15
Abstract
No abstract record available.
Inventors
- 👤 Maurice R Commanday
- 👤 James R Darnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:48
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/58; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12674; Y10T428/12771; Y10T428/12806; Y10T428/12812
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
THE PROCESS OF TREATING A REFRACTORY METAL OF THE GROUP CONSISTING OF COLUMNIUM, TATALUM AND ALLOYS THEREOF TO RENDER THE METAL SURFACE RESISTANT TO OXIDATION AT HIGH TEMPERATURES, THAT INCLUDES, HEATING THE METAL TO A TEMPERSTURE BETWEEN ABOUT 1600* F. AND 2800* F. IN A NON-OXIDIZING ATMOSPHERE AND IN SURFACE CONTACT WITH A POWDER MIXTURE OF ABOUT 30 TO 50 WEIGHT PARTS OF A SUBSTANCE OF THE CLASS CONSISTING OF MOLYDDENUM AND FERRO MOLYBDENUM, ABOUT 70 TO 50 PARTS OF INERT FILLER AND 0.02 TO 5 PARTS OF AN INORGANIC HALIDE AND THEREBY ALLOYING MOLYBDENUM INTO THE METAL SURFACE; AND SUBSEQUENTLY HEATING THE METAL TO A TEMPERATURE BETWEEN ABOUT 1600* F.AND 2800* F. IN A NON-OXIDIZING ATMOSPHERE WITH SAID SURFACE IN CONTACT WITH A POWDER MIXTURE OF ABOUT 20 TO 5 PARTS OF AN INORGANIC HALIDE TO THEREBY FORM A MOLYBDENUM SILICIDE PROTECTIVE SURFACE COATING.
Claim 2
Dependent Claim
145 words
THE PROCESS OF TREATING A REFRACTORY METAL OF THE GROUP CONSISTING OF COLUMNIUM, TATALUM AND ALLOYS THEREOF TO RENDER THE METAL SURFACE RESISTANT TO OXIDATION AT HIGH TEMPERATURES, THAT INCLUDES, HEATING THE METAL TO A TEMPERSTURE BETWEEN ABOUT 1600* F. AND 2800* F. IN A NON-OXIDIZING ATMOSPHERE AND IN SURFACE CONTACT WITH A POWDER MIXTURE OF ABOUT 30 TO 50 WEIGHT PARTS OF A SUBSTANCE OF THE CLASS CONSISTING OF MOLYDDENUM AND FERRO MOLYBDENUM, ABOUT 70 TO 50 PARTS OF INERT FILLER AND 0.02 TO 5 PARTS OF AN INORGANIC HALIDE AND THEREBY ALLOYING MOLYBDENUM INTO THE METAL SURFACE; AND SUBSEQUENTLY HEATING THE METAL TO A TEMPERATURE BETWEEN ABOUT 1600* F.AND 2800* F. IN A NON-OXIDIZING ATMOSPHERE WITH SAID SURFACE IN CONTACT WITH A POWDER MIXTURE OF ABOUT 20 TO 5 PARTS OF AN INORGANIC HALIDE TO THEREBY FORM A MOLYBDENUM SILICIDE PROTECTIVE SURFACE COATING.
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) | 1965-01-01 | 1965-07-03 | 1966-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-01 | 1969-07-03 | 1970-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-01 | 1973-07-03 | 1974-01-02 | $7700.00 | Window Closed / Lapsed |