Patent US2993678A successfully refreshed from Google Patents.
US2993678A
Expired / Lapsed
US
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Coated molybdenum article
Assignee: General Electric Co
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Filing: 1955-07-21
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Granted: 1961-07-25
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Expires: 1975-07-21
Abstract
No abstract record available.
Inventors
- 👤 Frederik S Schultz
- 👤 Moses A Levinstein
- 👤 George F Albers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:00
CPC Classifications
C; C23; C23C; C23C4/00; C23C4/18; C23C28/00; C23C4/04; Y; Y10; Y10S; Y10S205/00; Y10S205/917; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/937; Y10S428/939; Y10S60/00; Y10S60/909; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549; Y10T428/12576; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/12847
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
AN IMPACT AND OXIDATION RESISTANT ARTICLE OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND MOLYBDENUM BASE ALLOYS AND HAVING A COMPOSITE SURFACE SYSTEM METALLURGICALLY BONDED TOGETHER INTO SAID ARTICLE, SAID COMPOSITE SURFACE SYSTEM CONSISTING OF: A FIRST COATING OF A NICKEL BASE, NICKEL-SILICON-BORON FLAME SPRAYING ALLOY METALLURGICALLY BONDED TO SAID ARTICLE, AN INTERMETALLIC CHROMIUM BORIDE SECOND PORTION METALLURGICALLY BONDED TO SAID FIRST COATING, AND A THIRD COATING OF CHROMIUM METALLURGICALLY BONDED TO SAID SECOND PORTION, SAID CHROMIUM BORIDE PORTION BEING LOCATED BETWEEN AND BEING THE PRODUCT OF INTERDIFFUSION OF SAID FIRST COATING AND SAID THIRD COATING.
Claim 2
Dependent Claim
99 words
AN IMPACT AND OXIDATION RESISTANT ARTICLE OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF MOLYBDENUM AND MOLYBDENUM BASE ALLOYS AND HAVING A COMPOSITE SURFACE SYSTEM METALLURGICALLY BONDED TOGETHER INTO SAID ARTICLE, SAID COMPOSITE SURFACE SYSTEM CONSISTING OF: A FIRST COATING OF A NICKEL BASE, NICKEL-SILICON-BORON FLAME SPRAYING ALLOY METALLURGICALLY BONDED TO SAID ARTICLE, AN INTERMETALLIC CHROMIUM BORIDE SECOND PORTION METALLURGICALLY BONDED TO SAID FIRST COATING, AND A THIRD COATING OF CHROMIUM METALLURGICALLY BONDED TO SAID SECOND PORTION, SAID CHROMIUM BORIDE PORTION BEING LOCATED BETWEEN AND BEING THE PRODUCT OF INTERDIFFUSION OF SAID FIRST COATING AND SAID THIRD COATING.
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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) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |