US3598638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diffusion metallic coating method
Assignee: General Electric Co
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Filing: 1968-11-29
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Granted: 1971-08-10
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Expires: 1988-11-29
Abstract
Abstract A METALLIC ARTICLE SURFACE IS PROVIDED WITH A DIFFUSION METALLIC COATING OF IMPROVED OXIDATION AND SULFIDATION RESISTANCE THROUGH A VAPOR DIFFUSION METALLIC METHOD CONDUCTED IN A NON-OXIDIZING ATMOSPHERE AS A RESULT OF MAINTAINING THE ARTICLE SURFACE AND A COATING MATERIAL WHICH SUPPLIES THE METALLIC COATING IN SPACED APART RELATIONSHIP WHILE HEATING BOTH THE SURFACE AND THE COATING MATERIAL TO PERFORM VAPOR DIFFUSION COATING. THE ARTICLE IS FIRST PROVIDED WITH A COATING OF LOOSELY ADHERENT OXIDE PARTICLES WHICH A ENTRAPPED IN THE DIFFUSION COATING.
Inventors
- 👤 David J Levine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:04
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/06; C23C10/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |